Clothes you can move freely and feel comfortable in while
pushing your physical limits.
![Lightweight Poly 1/4-Zip Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SIC/SICZ2O8/PEOLNIWACHPR.jpg) Lightweight Poly 1/4-Zip Baselayer Top - Men'sOn sale - now $26.6 was $64
| ![Lightweight Poly 1/4-Zip Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SIC/SICZ2O8/STRLIM.jpg) Lightweight Poly 1/4-Zip Baselayer Top - Men'sOn sale - now $27.6 was $69
| ![Polo Ralph Lauren Knit Long John Base Layer Crew (Cruise Navy/Light Navy All Over Pony Print) Men](https://m.media-amazon.com/images/I/716CaYd8nBL._SR400%2C300_.jpg) Polo Ralph Lauren Knit Long John Base Layer Crew (Cruise Navy/Light Navy All Over Pony Print) Men's ClothingOn sale - now $28.87 was $38.5
|
![L.L.Bean Midweight Base Layer Crew Long Sleeve (Carbon Navy) Men](https://m.media-amazon.com/images/I/81T6aPwGuGL._SR400%2C300_.jpg) L.L.Bean Midweight Base Layer Crew Long Sleeve (Carbon Navy) Men's ClothingOn sale - now $30.46 was $49.95
| ![Lightweight Poly 1/4-Zip Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SIC/SICZ2O8/INKBLU.jpg) Lightweight Poly 1/4-Zip Baselayer Top - Men'sOn sale - now $32 was $64
| ![Lightweight Poly 1/4-Zip Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SIC/SICZ2O8/OLINIGPRI.jpg) Lightweight Poly 1/4-Zip Baselayer Top - Men'sOn sale - now $34.5 was $69
|
![Polo Ralph Lauren Knit Long John Base Layer Crew (Polo Black/RL2000 Red Pony Print) Men](https://m.media-amazon.com/images/I/81G2-DRcXoL._SR400%2C300_.jpg) Polo Ralph Lauren Knit Long John Base Layer Crew (Polo Black/RL2000 Red Pony Print) Men's ClothingOn sale - now $34.65 was $38.5
| ![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/VOLBLA.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $34.65 was $99
| ![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/VOL.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $34.65 was $99
|
![Fraser Baselayer Top - Men](https://www.backcountry.com/images/items/1200/ORG/ORGV69E/SHALIM.jpg) Fraser Baselayer Top - Men'sOn sale - now $34.98 was $99.95
| ![Warm Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/FLK/FLK1WVQ/ROY.jpg) Warm Long-Sleeve Baselayer Top - Men'sOn sale - now $38 was $95
| ![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dw04d2a126/images/hi-res/44427_HMDO_CM1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Midweight Baselayer Crewneck Shirt in Dolomite Blue, Extra Small - Hiking Shirts - Recycled PolyesterOn sale - now $38.99 was $79
|
![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/FADGEOCOL.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $39.6 was $99
| ![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/ABYCIT.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $39.6 was $99
| ![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/EBOCIT.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $39.6 was $99
|
![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/GLACOL.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $39.6 was $99
| ![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/FADGEOCIT.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $39.6 was $99
| ![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/COLBLA.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $39.6 was $99
|
![Fraser Baselayer Top - Men](https://www.backcountry.com/images/items/1200/ORG/ORGV69E/BLA.jpg) Fraser Baselayer Top - Men'sOn sale - now $39.98 was $99.95
| ![Fraser Baselayer Top - Men](https://www.backcountry.com/images/items/1200/ORG/ORGV69E/DARLEA.jpg) Fraser Baselayer Top - Men'sOn sale - now $39.98 was $99.95
| ![L.L.Bean Midweight Base Layer Crew Long Sleeve (Black) Men](https://m.media-amazon.com/images/I/71ms-p-wPZL._SR400%2C300_.jpg) L.L.Bean Midweight Base Layer Crew Long Sleeve (Black) Men's ClothingOn sale - now $39.99 was $49.95
|
![Maximum Warm Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/FLK/FLK1WVR/CAR.jpg) Maximum Warm Long-Sleeve Baselayer Top - Men'sOn sale - now $40.8 was $102
| ![Maximum Warm Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/FLK/FLK1WVR/BLA.jpg) Maximum Warm Long-Sleeve Baselayer Top - Men'sOn sale - now $40.8 was $102
| ![Warm Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/FLK/FLK1WVQ/DARNIG.jpg) Warm Long-Sleeve Baselayer Top - Men'sOn sale - now $42.75 was $95
|
![Warm Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/FLK/FLK1WVQ/CAR.jpg) Warm Long-Sleeve Baselayer Top - Men'sOn sale - now $42.75 was $95
| ![Warm Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/FLK/FLK1WVQ/BLA.jpg) Warm Long-Sleeve Baselayer Top - Men'sOn sale - now $42.75 was $95
| ![Alpine Onset Merino Quarter Zip Baselayer Top - Men](https://www.backcountry.com/images/items/1200/ODR/ODRZ8JU/NAVBLUCAM.jpg) Alpine Onset Merino Quarter Zip Baselayer Top - Men'sOn sale - now $44.53 was $98.95
|
![Lightweight Tubular Knit Short-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/GIO/GIOX2BD/WHI.jpg) Lightweight Tubular Knit Short-Sleeve Baselayer Top - Men'sOn sale - now $44.95 was $59.95
| ![Graphene Midweight Baselayer Top - Men](https://www.backcountry.com/images/items/1200/WIE/WIE001D/FOGKHA.jpg) Graphene Midweight Baselayer Top - Men'sOn sale - now $47.4 was $79
| ![Graphene Midweight Baselayer Top - Men](https://www.backcountry.com/images/items/1200/WIE/WIE001D/GRABLA.jpg) Graphene Midweight Baselayer Top - Men'sOn sale - now $47.4 was $79
|
![Transloft Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/EDA/EDAZ05L/BLA.jpg) Transloft Long-Sleeve Baselayer Top - Men'sOn sale - now $48.7 was $64.95
| ![Alpine Onset Merino Quarter Zip Baselayer Top - Men](https://www.backcountry.com/images/items/1200/ODR/ODRZ8JU/CLABLU.jpg) Alpine Onset Merino Quarter Zip Baselayer Top - Men'sOn sale - now $49.48 was $98.95
| ![Spirit Of](https://www.backcountry.com/images/items/1200/SPD/SPDQ5HE/GLAABY.jpg) Spirit Of '78 Half-Zip Baselayer Top - Men'sOn sale - now $49.5 was $99
|
![Heavyweight X Baselayer 1/4-Zip Top - Men](https://www.backcountry.com/images/items/1200/BUR/BURZ8HG/ANGRDRBL.jpg) Heavyweight X Baselayer 1/4-Zip Top - Men'sOn sale - now $52.22 was $94.95
| ![Bodyfit Baselayer Sleeveless Top - Men](https://www.backcountry.com/images/items/1200/STF/STFC067/WHI.jpg) Bodyfit Baselayer Sleeveless Top - Men'sOn sale - now $52.45 was $74.95
| ![Intraknit Active Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SWL/SWLZ8YH/LEA.jpg) Intraknit Active Long-Sleeve Baselayer Top - Men'sOn sale - now $55 was $110
|
![Heavyweight X Baselayer 1/4-Zip Top - Men](https://www.backcountry.com/images/items/1200/BUR/BURZ8HG/COBBLU.jpg) Heavyweight X Baselayer 1/4-Zip Top - Men'sOn sale - now $59.97 was $99.95
| ![Windstopper Base Layer Sleeveless Shirt - Men](https://www.backcountry.com/images/items/1200/GWR/GWR002U/BK.jpg) Windstopper Base Layer Sleeveless Shirt - Men'sOn sale - now $60 was $80
| ![Windstopper Base Layer Sleeveless Shirt - Men](https://www.backcountry.com/images/items/1200/GWR/GWR002U/LTGRE.jpg) Windstopper Base Layer Sleeveless Shirt - Men'sOn sale - now $60 was $80
|
![SAXX UNDERWEAR Roast Master Heavyweight Long Sleeve Base Layer (Black) Men](https://m.media-amazon.com/images/I/51P6Bglsd+L._SR400%2C300_.jpg) SAXX UNDERWEAR Roast Master Heavyweight Long Sleeve Base Layer (Black) Men's ClothingOn sale - now $64.6 was $85
| ![Intraknit Active Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SWL/SWLZ8YH/BLA.jpg) Intraknit Active Long-Sleeve Baselayer Top - Men'sOn sale - now $66 was $110
| ![Windstopper Base Layer Shirt - Men](https://www.backcountry.com/images/items/1200/GWR/GWR002T/LTGRE.jpg) Windstopper Base Layer Shirt - Men'sOn sale - now $67.5 was $90
|
![Windstopper Base Layer Shirt - Men](https://www.backcountry.com/images/items/1200/GWR/GWR002T/BK.jpg) Windstopper Base Layer Shirt - Men'sOn sale - now $67.5 was $90
| ![Windstopper Base Layer Thermo Long-Sleeve Shirt - Men](https://www.backcountry.com/images/items/1200/GWR/GWR0068/BK.jpg) Windstopper Base Layer Thermo Long-Sleeve Shirt - Men'sOn sale - now $71.25 was $95
| ![Windstopper Base Layer Thermo Long-Sleeve Shirt - Men](https://www.backcountry.com/images/items/1200/GWR/GWR0068/LTGRE.jpg) Windstopper Base Layer Thermo Long-Sleeve Shirt - Men'sOn sale - now $71.25 was $95
|
![Windstopper Base Layer Long Sleeve Shirt - Men](https://www.backcountry.com/images/items/1200/GWR/GWR0069/BK.jpg) Windstopper Base Layer Long Sleeve Shirt - Men'sOn sale - now $75 was $100
| ![Windstopper Base Layer Long Sleeve Shirt - Men](https://www.backcountry.com/images/items/1200/GWR/GWR0069/LTGRE.jpg) Windstopper Base Layer Long Sleeve Shirt - Men'sOn sale - now $75 was $100
| ![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dw557dcba9/images/hi-res/44427_BLK_GNL1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Midweight Baselayer Crewneck Shirt in Black, Extra Small - Hiking Shirts - Recycled Polyester$79
|
![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dwebb727ac/images/hi-res/44427_CNBR_AR1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Midweight Baselayer Crewneck Shirt in Cone Brown, Medium - Hiking Shirts - Recycled Polyester$79
| ![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dwae686679/images/hi-res/44427_SMDB_SQ1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Midweight Baselayer Crewneck Shirt in Smolder Blue, 3XL - Hiking Shirts - Recycled Polyester$79
| ![Craft Core Warm Base Layer Set (Black) Men](https://m.media-amazon.com/images/I/81L16fo4wRL._SR400%2C300_.jpg) Craft Core Warm Base Layer Set (Black) Men's Active Sets$79.99
|
![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dwc14440cb/images/hi-res/44447_SMDB_JC1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Midweight Baselayer 1/2-Zip Pullover in Black, Large - Hiking Shirts - Recycled Polyester$89
| ![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dwb60739c9/images/hi-res/44447_NUVG_CS1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Midweight Baselayer 1/2-Zip Pullover in Nouveau Green, Small - Short Length - Hiking Shirts - Recycled Polyester$89
| ![Smartwool Classic All-Season Merino Base Layer Long Sleeve (Iron Heather) Men](https://m.media-amazon.com/images/I/818hHwSKxkL._SR400%2C300_.jpg) Smartwool Classic All-Season Merino Base Layer Long Sleeve (Iron Heather) Men's Clothing$90
|
![Smartwool Classic All-Season Merino Base Layer Long Sleeve (Black) Men](https://m.media-amazon.com/images/I/71bv8suwm9L._SR400%2C300_.jpg) Smartwool Classic All-Season Merino Base Layer Long Sleeve (Black) Men's Clothing$90
| ![Smartwool Classic All-Season Merino Base Layer Long Sleeve (Fern Green) Men](https://m.media-amazon.com/images/I/71NL3YfJUJL._SR400%2C300_.jpg) Smartwool Classic All-Season Merino Base Layer Long Sleeve (Fern Green) Men's Clothing$90
| ![Smartwool Classic All-Season Merino Base Layer Long Sleeve (Pewter Blue Wash) Men](https://m.media-amazon.com/images/I/711z-DZmKML._SR400%2C300_.jpg) Smartwool Classic All-Season Merino Base Layer Long Sleeve (Pewter Blue Wash) Men's Clothing$90
|
![Windstopper Base Layer Thermo Turtleneck - Men](https://www.backcountry.com/images/items/1200/GWR/GWR0067/LTGRE.jpg) Windstopper Base Layer Thermo Turtleneck - Men'sOn sale - now $90 was $120
| ![Windstopper Base Layer Thermo Turtleneck - Men](https://www.backcountry.com/images/items/1200/GWR/GWR0067/BK.jpg) Windstopper Base Layer Thermo Turtleneck - Men'sOn sale - now $90 was $120
| ![Alpine Onset Merino Quarter Zip Baselayer Top - Men](https://www.backcountry.com/images/items/1200/ODR/ODRZ8JU/LOD.jpg) Alpine Onset Merino Quarter Zip Baselayer Top - Men's$98.95
|
![Heavyweight X Baselayer 1/4-Zip Top - Men](https://www.backcountry.com/images/items/1200/BUR/BURZ8HG/TRUBLA.jpg) Heavyweight X Baselayer 1/4-Zip Top - Men's$99.95
| ![Fraser Baselayer Top - Men](https://www.backcountry.com/images/items/1200/ORG/ORGV69E/SHAAMB.jpg) Fraser Baselayer Top - Men's$99.95
| ![Icebreaker 260 Tech Merino Base Layer Long Sleeve Crewe (Loden) Men](https://m.media-amazon.com/images/I/71zGxdBYnML._SR400%2C300_.jpg) Icebreaker 260 Tech Merino Base Layer Long Sleeve Crewe (Loden) Men's ClothingOn sale - now $103.75 was $125
|
![Icebreaker 260 Tech Merino Base Layer Long Sleeve 1/2 Zip (Black) Men](https://m.media-amazon.com/images/I/61Z0gM4JcBL._SR400%2C300_.jpg) Icebreaker 260 Tech Merino Base Layer Long Sleeve 1/2 Zip (Black) Men's ClothingOn sale - now $107.83 was $135
| ![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dw32f134d2/images/hi-res/43657_BLK_JF1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Thermal Weight Baselayer 1/2-Zip Pullover in Black, Extra Small - Hiking Shirts - Recycled Polyester/Nylon/Polyester$109
| ![Intraknit Active Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SWL/SWLZ8YH/TWIBLULIM.jpg) Intraknit Active Long-Sleeve Baselayer Top - Men's$110
|
![Intraknit Active Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SWL/SWLZ8YH/EGG.jpg) Intraknit Active Long-Sleeve Baselayer Top - Men's$110
| ![Intraknit Active Long-Sleeve Baselayer Top - Men](https://www.backcountry.com/images/items/1200/SWL/SWLZ8YH/BLACHA.jpg) Intraknit Active Long-Sleeve Baselayer Top - Men's$110
| ![Smartwool Merino 250 Base Layer Crew (Charcoal Heather) Men](https://m.media-amazon.com/images/I/81kZcjtnlfL._SR400%2C300_.jpg) Smartwool Merino 250 Base Layer Crew (Charcoal Heather) Men's Clothing$115
|
![Smartwool Merino 250 Base Layer Crew (Black) Men](https://m.media-amazon.com/images/I/713gWMh46sL._SR400%2C300_.jpg) Smartwool Merino 250 Base Layer Crew (Black) Men's Clothing$115
| ![Smartwool Merino 250 Base Layer Crew (Winter Moss Heather) Men](https://m.media-amazon.com/images/I/81B+LK5lOYL._SR400%2C300_.jpg) Smartwool Merino 250 Base Layer Crew (Winter Moss Heather) Men's Clothing$115
| ![Smartwool Merino 250 Base Layer Crew (Argyle Purple Heather) Men](https://m.media-amazon.com/images/I/71qVnUr3oNL._SR400%2C300_.jpg) Smartwool Merino 250 Base Layer Crew (Argyle Purple Heather) Men's Clothing$115
|
![Smartwool Merino 250 Base Layer Crew (Black Color Shift) Men](https://m.media-amazon.com/images/I/81ORheQwmrL._SR400%2C300_.jpg) Smartwool Merino 250 Base Layer Crew (Black Color Shift) Men's Clothing$115
| ![Smartwool Merino 250 Base Layer Crew (Deep Navy Color Shift) Men](https://m.media-amazon.com/images/I/81yo6G5qI1L._SR400%2C300_.jpg) Smartwool Merino 250 Base Layer Crew (Deep Navy Color Shift) Men's Clothing$115
| ![Icebreaker 260 Tech Merino Base Layer Long Sleeve Crewe (Midnight Navy) Men](https://m.media-amazon.com/images/I/71GDRRQkQwL._SR400%2C300_.jpg) Icebreaker 260 Tech Merino Base Layer Long Sleeve Crewe (Midnight Navy) Men's Clothing$125
|
![Icebreaker 260 Tech Merino Base Layer Long Sleeve Crewe (Black) Men](https://m.media-amazon.com/images/I/61FnbaTltmL._SR400%2C300_.jpg) Icebreaker 260 Tech Merino Base Layer Long Sleeve Crewe (Black) Men's Clothing$125
| ![Icebreaker 260 Tech Merino Base Layer Long Sleeve Crewe (Gritstone Heather) Men](https://m.media-amazon.com/images/I/81yJlw-kMWL._SR400%2C300_.jpg) Icebreaker 260 Tech Merino Base Layer Long Sleeve Crewe (Gritstone Heather) Men's Clothing$125
| ![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dwd6606427/images/hi-res/43580_BLK_KM1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Thermal Baselayer Hoody in Black, Large - Hiking Shirts - Recycled Polyester/Spandex$139
|
![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dw08edf723/images/hi-res/43580_GNCA_ALP1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Thermal Baselayer Hoody in Golden Caramel, Medium - Hiking Shirts - Recycled Polyester/Spandex$139
| ![Patagonia Men](https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dwc5722d40/images/hi-res/43580_LMBE_KM1.jpg?sw=768&sh=768&sfrm=png&q=95&bgcolor=f5f5f5) Patagonia Men's Capilene Thermal Baselayer Hoody in Lagom Blue, Large - Hiking Shirts - Recycled Polyester/Spandex$139
|