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. Your training is technical, so why shouldnt your clothes be? Wear the X-Bionic Mid Compression X-Shirt for a more comfortable session. . Ride all day in the comfort of the Burton Mens Limited Wool Long-Sleeve Top. The best of properties of both wool and acrylic come together in this Burton long underwear top. . In chilly weather, the X-Bionic Mens Energy Accumulator Short Pants prevent you from burning up as you work out and from getting cold and soggy when you take a break. . The Burton Mens Shaun White Union Suit covers you from head to toe in warm, moisture wicking Dry Ride material. You might look a little strange buttoning up these old school long-johns, but youll be warm as hell. . High-output activities like cross country skiing and trail running demand a lightweight, breathable top like the Outdoor Research Mens Option Zip Jersey. . Whether climbing or on belay, your legs will be comfortable in the Patagonia Mens Wool 3 Bottoms. This medium-weight base layer is made for stop and go activities in cool to cold climates. . When you continually find yourself soaked with sweat after a long run, its time to get a running shirt that actually wicks successfully. Zip up the Sugoi Mens Axiom Top and run in dry comfort. . The Mountain Hardwear Mens Power Stretch Zip Tee is the ideal base or mid-layer piece for alpine climbers and mountaineers. . The CW-X Mens Insulator Pro Zip-T is a close-fitting top that begs to be worn on winter runs and cross country ski tours. . The Icebreaker Mens BodyFit260 Tech Top features super high quality New Zealand merino wool. . When Powderhorn gave us a bunch of Mens Longhorn Base Layer Bottoms, it had but one requirement: that we sold them only to guys with handlebar mustaches. . The Powderhorn Mens Longhorn Crew Zip Top features highly breathable and super soft alpaca, taking wool to the next level. . Wear the merino wool Icebreaker Mens BodyFit260 Short-Sleeve Crewe as a next-to-skin layer at your Himalayan base camp. Icebreaker made the BodyFit260 base layer for cold-weather use but gave it short sleeves to enhance its versatility. . Zip up the Ibex Mens Woolies Zip T-Neck Top to tackle the steep and deep and then keep it on for that aprs ski party with friends. . Layer the Burton Mens Expedition pants under your shell pants in brutally cold conditionsits hard to stomp tricks with frozen legs. . Go higher while wearing the Icebreaker Mens Altitude Crewe Midweight Long Underwear Top. This lightweight base layer features a slim fit and all the advantages of merino wool. . Layer The North Face Mens Cirque Top Delta -Zip Long-Sleeve Shirt under your ski jacket on wet spring days, and wear the micro-fleece Cirque pullover on its own during fall hikes. . The Powderhorn Mens Longhorn Crew Tophm looks like Powderhorn must have a whole herd of llamas at their headquarters in Jackson Hole or something because this long-sleeve base layer features the softest-of-the-soft alpaca wool. . The versatile Mens Microweight T-Shirt features SmartWools soft merino wool fabric, which pulls sweat vapors away from your skin to keep you dry and comfortable. . The close-fitting Burton Mens Long-Sleeve Compression Crew provides efficient insulation under your fleece, and its so light youll hardly know youre wearing it. . The Icebreaker Mens 2-Tone Long-Sleeve BodyFit260 Crew offers some much-needed style in base layer fashion, not to mention its made of 100% Merino, the best natural fiber for temperature regulation in the world. . Thanks to a close-to-body performance fit, The North Face Mens Momentum Shirt layers easily under a ski jacket or fleece. This quick-drying performance shirt keeps you dry on the slopes and on the trail. . The Icebreaker Mens BodyFit Mondo Zip Topnot to be confused with a turtle neck. . With Polartec Power Dry Fabric, The Burton AK Mens Midweight Bottom starts your layering system off right with moisture-managing warmth. . The Mammut Mens Yukon Trim Zip Top wants to be invited on all your mountain excursions, and its fleecy versatility just might guarantee it a spot on every trip. . If you have yet to enjoy the benefits of merino, the Merrell Mens Merino Long-Sleeve Shirt is a great place to start. This highly effective insulator feels soft and comfortable as a layer or a solo piece. . The featherweight Patagonia Mens Capilene 1 Bottom is a fast wicking and fast drying base layer. . The Icebreakers Mens BodyFit200 Oasis Crew is a great all-around lightweight base layer made from the ultimate breathable insulationMerino wool. . Layer the Burton Mens AK Silkweight Pants under your shell to provide warmth and wick sweat without adding bulk. . The Rho SL Bottom is a nearly weightless addition to your active wardrobe. . Sugoi designed the Mens Convector Zip Top for guys who move at a rapid rate, whether its on foot or bike. The shirts unique knit construction retains body heat while increasing the rate of perspiration evaporation. . Arcteryx made the Rho SL Long-Sleeve Crew Neck to be lightweight and incredibly comfortable to wear alone or as a layering piece.` . Burton blended acrylic and wool into the Mens Limited Wool Pant to keep you comfortable from first chair until your last run. . Antibacterial properties in the slim-fit Columbia Mens Top-O-Graphic Half Zip Pullover keep you from smelling ultra-stinky after a day of skiing, and the warm fleece fabric feels soft under your winter jacket. . The X-Bionic Mens Bionic Energizer X-Boxer has strategically placed conduits that funnel excess sweat away from your body and channel cool air next to your skin so you stay dry and comfortable. . The Ibex Mens Pointelle Boxer gives your nether regions the benefits of Merino wool: temperature regulation, bacteria build-up prevention, and a smooth, soft feel. . When its freezing out there, your only chance of staying toasty is by pulling on the Oakley Mens Second Chance Long Underwear Bottoms. . Our first impression of the Oakley Mens Second Chance Long-Underwear Top can be summed up in one word: damn toasty. . The CW-X Mens LifeFit Mesh Briefs give you much more than those old tighty whities. These briefs provide lots of support, breathe well, wick moisture, and fight odors, so you stay comfortable during your trail runs or workouts. . While riding, Burton Mens Long-Sleeve Team Jersey wicks sweat and fights odor. The rest of the time, it just looks chill. . The Burton Mens Compression Boxer wicks sweat, insulates, and compresses your thighs for less muscle soreness after a day of riding. . Sherpa Adventure Gear added bamboo charcoal to the Mens Baans Tech -Zip Top because it wicks sweat quickly, and its an antimicrobial. . Stuff your carry-on with a couple pairs of Patagonia Mens Active Classic Boxers, and youre ready for a trip anywhere. . Pull on the Mountain Hardwear Mens eXtend Midweight Long-Sleeve Zip T on day one of your trip, and its anti-microbial treatment keeps the stink low five days later. . The Marmot Mens Midweight Zip long sleeve shirt covers you in a shaped fit thats easy to layer without accumulating bulk, and the half neck zip dumps heat when the temps rise. . The Mountain Hardwear Mens eXtend Featherweight Long-Sleeve Crew provides soft, quick-drying insulation for extended trips. . This year when youre looking down a line stacked with cliff bands, at least youll know youre not shaking from being cold. The Mountain Hardwear Mens eXtend Featherweight Zip Tee is a lightweight and comfortable base layer made to keep you dry. . Tired of base layers that stink like used socks after a few hours? Switch to the anti-microbial Mountain Hardwear Mens eXtend Midweight Long-Sleeve Crew. . The Mountain Hardwear Mens eXtend Midweight Tights can handle everything from a hut trip in the San Juans to a full day of riding the lifts. . Prolong any outdoor activity in a pair of Mountain Hardwear Extend Featherweight Tights. . Haul a sled to your favorite winter campsite, and hangout all night without changing your base layer. The Mountain Hardwear Mens ThermaDry Zip Tee is a midweight thermal top made for backcountry use and cold-weather activities. . The Marmot Mens Midweight Crew Long Sleeve top offers relief for those who prefer to avoid the collar zipper pile-up. . The Oakley Mens In Control Boxer keeps the boys so comfortable that you might just pee your pants Although that would sort of defeat the purpose. . The Mountain Hardwear Mens HyperDry Zip Tee is a lightweight thermal top made for aerobic activities in cool weather. . Whether used as a layering piece or worn alone, the anti-microbial Marmot Mens Lightweight Long-Sleeve Crew wicks moisture away from your skin when you work up a sweat. . The Thermadry Tights show where Mountain Hardwears head has been lately in your pants. . Whether youre heading out for a brisk morning run or gunning for some spring corn, the Marmot Mens Lightweight Bottom wicks moisture and cools you down when you work up a sweat. . The Ibex Johns are a skier or snowboarders best friend, offering moisture-wicking warmth in a length base layer bottom that wont interfere with your boots. . The Icebreaker Mens BodyFit200 Skin Leggings with Fly give you the warmth and technical properties of the best base layer around, with the convenience of a zip fly. . We made our Backcountry.com Mens Long-Sleeve Zip Tee with super-fine New Zealand Merino, flat-locked seams, and a zip chest so you can tackle anything from a 5-day backpacking trip to a run around the neighborhood in complete comfort. . Uncompromising in both quality and form, our Backcountry.com Mens Merino Long-Sleeve Crew Shirt offers the superior moisture managing, naturally anti-odor, and comfort of super-fine New Zealand Merino at a price that might make you pee a little. . The Icebreaker Mens BodyFit200 Legless Pant is a -length merino wool pant thats designed specifically for layering with winter boots. . Dont let you bottom half suffer in the cold. Pull on the Ibex Mens Woolies Bottoms and tackle any peak, mountain, or sledding hill. . Layer the Ibex Men Woolies Crew Long Sleeve Shirt under other layers in the winter, or wear it by itselfeither way, this form fitting shirt regulates your temperature, wicks moisture, and fights funk. . Play longer and have more fun in a pair of Mountain Hardwear Extend Featherweight Boxers. . Cloudveil made the Mens Run Dont Walk Boxers out of Polartec Power Stretch fleece, to keep your ass(ets) warm when youre sprinting snowy laps around the lodge. . The Under Armour Mens Base 2.0 Midweight Long Underwear Top keeps you warm by quickly wicking moisture away from your body and gives you a tailored fit thats not too tight. . The Under Armour Mens Coldgear Midweight Long Underwear Top traps warmth and provides you with a compression fit to reduce fatigue and keep you dry and comfy. . Dont let the weight of the world get you downpull on your slim-fitting Icebreaker Mens BodyFit150 Atlas Short-Sleeve T-Shirt and go trail running or rock climbing. . Just because youre free and easy doesnt mean you dont live life in the fast lane. Mountain Hardwear made the Hyperdry Boxer for men on the move. . Layer the Under Armour Mens Base 1.0 Leggings under ski-shell pants in the spring and wind-blocking running pants in the late fall. . Pull on the Under Armour Mens fitted Base 1.0 Crew Long Underwear Top for early spring runs. . The Columbia Mens Steens Mountain Lightweight Bottoms insulation warms you just enough to make your fall hike or spring trail run more comfortable. . Wool boxer shorts? You better believe it. The Icebreaker Mens BodyFit200 Boxer With Fly gives you all the benefits of merino wool minus the itch. . Put on the Ibex Mens D-Lux Boxer and find out what youve been missing. Lightweight New Zealand merino wool sinks you into a sea of softness, and Ibexs relaxed fit gives you plenty of room to move around. . Wool boxer briefs? Thats right. The Icebreaker Mens BodyFit150 Boxer Brief gives you all the benefits of merino wool minus the itch. . The Ex Officio Mens Give-N-Go Boxer will make all those cotton jobbies in your top drawer obsolete. Whether youre on vacation or out for a hike, this travel boxer wicks sweat, stretches, and fights odor for a new level of comfort and performance. . The Ex Officio Mens Give-N-Go Boxer Brief arent your typical pair of undies. These breathable boxers air dry in a few hours, wick sweat, and fight odor. . Wear the Ex Officio Mens Give-N-Go Brief for long flights, strenuous hikes, or anytime comfort and wicking performance are paramount. . The low-rise Ex Officio Mens Give-N-Go Sport Brief air-dry within a couple hours so you can wash as you go and carry fewer pairs of underwear on your next journey. . The Columbia Mens Bugaboo Crew Long Sleeve works as an exceptional warmer with layering capabilities. . The DAKINE Mens Three Qtr Pant uses a boot-length cut to eliminate the unneeded bulk that builds up around the top of your boots when you wear your other base layers. . Start your layering with the Patagonia Mens Capilene 2 Bottoms. Patagonia made these long underwear bottoms with knit Capilene for maximum breathability. . The Patagonia Mens Active Sport Boxer Briefs should be the first step of your layering system when you go skiing, hiking, or climbing. . If you think base layers are itchy and uncomfortable, take a look at the Mountain Hardwear Mens HyperDry Tights. These silk-weight long underwear are made for aerobic backcountry tripstheyll wick moisture away from your skin to the fabrics surface where i . A Rho Long-Sleeve Zip-Neck Top from Arcteryx is a durable and soft way to layer for cold weather activities. . The North Face Pluto Hill Pullover has a smooth face for easy layering, and a brushed grid backing that manages moisture during heavy activity. . The Under Armour Mens Boxer Short keeps you cool and comfortable at work and during your workout. . The comfortable, wicking Helly Hansen Mens Seamless Boxer is no average pair of underwear. . The Descente Pro-V Mid Wind Boxer Brief has a panel of wind-resistant stretch fabric to give you crucial breeze protection. . Problem: When you buckle your ski boots, your base layer bunches up around your calf and causes nasty pressure points. Solution: The Patagonia Mens Capilene 3 Knickers. . Wear the SmartWool Mens Lightweight Bottom for cool-weather aerobic activities or as a next-to-skin base layer. . Perform better at your sport when you wear the X-Bionic Mens Energy Accumulator Long Pants. These long underwear bottoms have insulation, air channels, and sweat uptake channels that help you stay comfortable. . The North Face made the Mens XTC Midweight Tight from polyester and bamboo charcoal fabric to give you a light, packable, quick-drying, odor-free base layer for your cold-weather outdoor adventures. . A gusseted zipper collar on the Spyder Mens First Place Dry W.E.B. Midweight T-Neck keeps your body heat in on frigid winter days. . The North Face TKA 100 Glacier zip is a soft microfleece pullover perfect for layering or just bumming around on a crisp spring day. . The North Face TKA 100 pant is a super-warm lightweight fleece pant thats perfect for layering when you know its going to be a long, cold day. . An ideal layer for fall hikes or for layering under a softshell when skiing, The North Face Mens XTC Midweight Zip Shirt uses advanced bamboo charcoal technology for enhanced moisture management, odor resistance, and sun protection. . Wool in the springtime? Yup, the Smartwool Mens Microweight Boxer is 100% merino wool. It might also be the most versatile pair of skivvies youll ever have the privilege of pulling over your cheeks. . The Patagonia Mens R1 Pants work great as a heavy base layer or as a less-bulky alternative to fleece bottoms. Patagonias stretchy R1 fabric moves with you and wicks perspiration as you work hard. . Finally, your base layer can be a stylin as your outerwear with the Dakine Apex Long-Sleeve Crew Top. . The Arcteryx Mens Rho LT Zip Neck Top is an ideal foundation for backcountry travelers. . Reduce extra fabric on your next skiing, snowboarding, or winter climbing trip with the Arcteryx Mens Boot Cut Rho AR Bottoms. . The SmartWool Mens Midweight Boot Top Bottom forges peace between your base layer, socks, and boots. End the bunch-up junk show and opt for these merino not-so-long johns. . You can smell your sweaty performance layer shirt every time you walk by the drying rack in your hallway. Sick. The North Face Mens Softwool Crew Shirt naturally blocks odors and insulates. . When youre heading for the mountains in sub-zero temps, Mountain Hardwear Mens Power Stretch Tights are the perfect warm base layer pants for your layering system. . Dakines Trip Crew is a versatile top that can keep you warm and dry for cool autumn days on your bike or as a base layer for climbing or skiing. . Pull on the Patagonia Mens Capilene 3 Bottoms when you know youre going to be working hard in cold weather. . Patagonia made the Mens Organic Cotton Boxers for everyday comfort. The organic cotton feels smooth and softens over time. . The North Face used bamboo-charcoal technology to give the Mens XTC Lightweight Pants top-notch wicking ability and decreased odor retention. . Take your first step towards comfortable warmth when you layer with the anti-microbial Marmot Mens Midweight Bottom. . Miami muscle shirt or super-tech long-sleeve top? The innovative construction of the Helly Hansen Mens Odin Baselayer High Neck assures the latter. . Ski hard and play harder in the urban-inspired Icebreaker Mens LTD320 Coronet Top. The Sport Tops 320 merino wool keeps you warm in the pow but wont stink for the aprs ski party. . The Mens Arcteryx Rho Bottom has a tough exterior and soft interior to provide comfort in the mountains without sacrificing durability. . Wear the lightweight Patagonia Mens Wool 2 Bottoms under your rain pants in cold weathertheyll insulate even if they get wet. . The Icebreaker Mens Sport320 Rock Zip Long-Sleeve Shirt gives you the comfort of New Zealand merino wool in a mid-layer ideal for skiing or snowboarding. . With so many technologies fitted into on boxer the Columbia Mens Appalachian Boxer Brief makes an excellent active underwear choice. . The Patagonia Mens Capilene 1 Long-Sleeve Crew is an ultralight, fast-wicking top for warm-weather trail runs or hikes. . The Mountain Hardwear Mens Micro Chill Pant insulates you from cold weather and cold chairlifts while giving you freedom to move. . Low-profile seams and a tag-free label make the Columbia Mens Bugaboo Mid Weight Zip Long-Sleeve Top more comfortable when youre on the trail. . DAKINE added an Ageis antimicrobial treatment to the Mens Badlands Pant, so it doesnt get all stinky after a weekend on the slopes. . The Patagonia Mens Wool 2 Zip-Neck base layer doesnt hold the sweaty smells like your old synthetic long underwear did. Plus, the versatile Wool 2 keeps you dry and comfortable when you backpack, cross country ski, rock climb, or hike. . The Arcteryx Mens Accelero Pullover -Zip Lightweight Tops stretch polyester material moves with you as you ski, climb, hike, or run. . Tech out your underwear drawer with The North Face XTC Lightweight Boxer. These silky boxers feature bamboo carbon-infused fabric for increased moisture transport and odor resistance. . Tired of your base layers restricting your movement? The North Face Mens XTC Lightweight Crew has underarm gussets for a full range of motion. This long-sleeve shirt dries quickly and resists odor. . The Patagonia Mens Capilene 3 Long-Sleeve Crew features a dense honeycomb polyester fabric that feels soft on your skin, insulates you, and provides low-friction comfort with other layers. . Nylon-faced Motion Fleece makes the Outdoor Research Mens Specter Pants versatile enough to wear under you ski shells or alone for trail running and cross country skiing. . Zip up the DAKINE Mens Factor 1/4 Zip Long-Sleeve Top before you head out for a day on the mountain. This warm Microfleece base layer keeps you toasty, dry, and odor free. . Start your layering system with the midweight Patagonia Mens Wool 3 Long-Sleeve Zip-Neck on cold days. If youre just going for a brisk evening run, wear it solo, and unzip the neck when you warm up . The X-Bionic Mens Energy Accumulator Long-Sleeve T-Shirt is one smart cookie. It knows how to maintain your body temperature and conserve energy so you perform better when you ski, trek, or run. . Patagonia made the wicking Mens Capilene 4 Zip-Neck base layer for stop-and-go activities in cold conditions. . The North Face Mens XTC Midweight Crew works as a naturally antibacterial base layer for chilly days on the mountain. . The Ibex Woolies Bottom is a lightweight merino base layer for high-output sports. . The 686 Mens Long-Sleeve Tactic Riding Jersey has a polo collar that juices your style, whether youre dropping dank moves in the park or explaining that smell to the cops. . The highly insulating Patagonia Mens Capilene 4 Bottoms are made for very cold conditions. . Roll out of bed, pull on the Patagonia Mens Wool 2 Long-Sleeve Crew, and head out for a dawn trail run or ski tour. This long-sleeve, lightweight base layer keeps you dry like a synthetic top, but it naturally resists odors and insulates even when its wet . Wear the SmartWool Mens Midweight Zip-T for stop-and-go aerobic activities or as a warm base layer. . Wear the versatile Patagonia Mens R1 Flash Pullover either as a heavy base layer or lightweight insulating mid-layer when you exert in cold temps. Youll love the stretchy, wicking R1 fabric. . Your next-to-skin layer is key to staying warm and dry when you exert. The Columbia Mens Tri Regulator Heavyweight Bottom insulates you and wicks your sweat. . Pull on the lightweight Patagonia Mens Capilene 2 Zip-Neck shirt when you trail run, backpack, or cross country ski. Because Patagonia made this zip-neck top with a basketweave knit, it is insulating yet extremely breathable. . Fine Merino wool makes the Arcteryx Rho LTW Bottom soft against your skin and has a natural ability to move moisture away from your body. . The one-piece, fleece design of the Outdoor Research Mens Saturn Suit makes it ideal for skiers and climbers who need full-body insulation for ridiculously cold weather. . The North Face Mens Softwool -Zip Wool Top uses Australian merino wool to give you a softer feel than traditional wool and a greater comfort range than synthetic fabrics. . A shaped fit and leg gussets make the Columbia Mens Bugaboo Midweight Bottoms comfortable to wear under your shell pants and give you a full range of motion. . Slip into the lightweight Marmot Mens Reactor Pant when you need a little extra protection from cold ski lifts rides and butt-freezing belays. . The DAKINE Mens Covert Pant uses gusseted venting to increases breathability and keep you from overheating while you posthole up an out-of-bounds ridge. . Patagonia reduces relative humidity in your shorts with the Mens Active Boxer Brief. These boxer briefs feature wicking Capilene fabric. . Start your layering system right with the synthetic Patagonia Mens Active Sport Briefs. . In the coldest winter months, wear the Smartwool Mens Midweight Crew under your fleece jacket and waterproof shell. Thick, soft merino wool fibers manage moisture so you stay dry and warm while you rack up runs. . ArcTeryx made the Rho SL Long-Sleeve Crewneck Shirt to be a versatile and lightweight shirt that works by itself in warm weather or as a baselayer in colder conditions. . Columbias soft polyester Appalachian Long-Sleeve Mens Crew gives you an extra layer of insulation for hiking, climbing, skiing, or anything else you do in chilly weather. . Layer with the moisture-wicking Marmot Mens Lightweight Long-Sleeve Zip Neck shirt on chilly days and bust open the neck zipper when you need to dump some serious heat. . Tech out your underwear drawer with The North Face XTC Lightweight Boxer. This pair of silky underwear feature Charcoal bamboo fiber for increased moisture transport and odor resistance. . Outdoor Research combines the technical performance of wool and polyester with the Mens Sequence Zip Tee. . The X-Bionic Mens Energy Accumulator Medium-Length Pants probably wont help you run 60 mph like Six Million Dollar Man, but they will enhance your performance when you work out in cold weather. . Start your layering from the legs up with the Arcteryx Rho LT Bottom. . Wear the SmartWool Mens Lightweight Zip-T long-sleeve shirt for cool-weather aerobic activities or as a next-to-skin base layer. . The Columbia Mens Appalachian Bottoms anti-microbial treatment keeps the stink factor to a minimum when you wear these midweight base layers for multi-day trips. . Wear the SmartWool Mens Microweight Bottom for temperate or warm-weather aerobic activities or as a next-to-skin base layer. . Wear the SmartWool Mens Microweight Long-Sleeve Crew Shirt for cool- or warm-weather aerobic activities or as a next-to-skin base layer. . Layer the DAKINE Mens Badlands V-Neck Long-Sleeve Top under your kit, and shred all day in comfort. This super-lightweight base layer wicks excess moisture away from your skin, and fights odors so you dont get ignored in the tram. . The Patagonia Mens Capilene 3 Zip-Neck keeps you comfortable during aerobic activities in varying temperatures. . Slip on The North Face XTC Lightweight Zip shirt before a fall trail run, or use it as your base layer in the winter. Either way, this performance shirts bamboo charcoal technology wicks moisture, fights odor, and provides UPF 50+ sun protection. . The Arcteryx Delta LT Zip Pullover features an excellent warmth to weight ratio, making it a perfect mid-winter touring mid-layer. . By using super-soft jersey knit Australian Merino wool, The North Face Softwool Pant banishes the old notion of itchy wool baselayer to the history books. . Wear the SmartWool Mens Midweight Bottom for stop-and-go aerobic activities or as an insulating base layer. . Wear your Mountain Hardwear Mens eXtend Midweight Tights for your hut-to-hut ski trip or mountaineering adventure. These warm tights feature an antimicrobial finish, and they wick perspiration. . Put on the DAKINE Mens Ghostrider Crew Long-Sleeve Top and join the dawn patrol for a run at the peak. This double-knit DAKINE base layer top adds warmth, breathability, and odor protection. . Wear the lightweight Patagonia Mens Capilene 2 Crew top alone or as a base layer when you hike, backpack, or cross country ski. Patagonia made this crew top with an open knit for maximum breathability and wicking. . When the leaves have fallen and its time to fire up the woodstove, make the Patagonia Mens Wool 3 Crew Long-Sleeve Shirt your first line of defense from the cold when you head out for a hike or a ski tour. This chlorine-free Merino wool top features the b . Imagine how good a breathable mesh crotch panel in your boxers would feel when youre sweating bullets on runs, hikes, and workouts. . Ibex Mens Seamless Boxers will make everything else in your underwear drawer seem downright primitive. Once you put on these super soft and stretchy merino boxers, you wont want to take them off. . Wear the Helly Hansen Mens Fly Pant long underwear for aerobic activities in cool weather. . The Arcteryx Mens Rho LTW Zip Top is a great base layer to wear for long winter days in the backcountry. . When you need another layer, pull on the Sugoi Mens FinoStretch Boxer. Sugoi gave these runners boxers a contoured fit and a five-inch inseam for additional coverage in cool weather. . Pull on the Patagonia Mens Capilene 4 Crew when youre going to be huffing and puffing in the snow. With its moisture-wicking and temperature-regulating material, this long-sleeve top is ideal for sweat-inducing activities in cold weather. . During your next cold-weather adventure, put something warm and wicking next to your skin. The Columbia Mens Tri Regulator Heavyweight Top insulates you and soaks up your sweat. . Stay cool and secure right down to your skivvies when you wear the Under Armour Mens Boxer Jock. These boxer briefs give you a snug compression fit for support that wont hinder athletic range of motion. . Slip on The North Face Mens XTC Lightweight Zip shirt before a fall trail run, or use it as your base layer in the winter. Either way, this performance shirts bamboo charcoal technology wicks moisture, fights odor, and provides UPF 50+ sun protection. . Wear the SmartWool Mens Midweight Zip-T long-sleeve shirt for stop-and-go aerobic activities or as a warm base layer.