Men's Baselayers — 268 products / 1,497 models

Discover our collection of high-performance men's base layers designed to keep you warm, dry, and comfortable during any activity. Whether you need thermal tops, leggings, or long underwear for skiing, hiking, or working outdoors, we have the perfect foundation for your layering system. Shop now to find top-quality materials that regulate temperature and manage moisture, ensuring you perform at your best.image

Men's Baselayers On Sale Up to 85% Off from Top Brands including Rothco, Columbia, Smartwool, Vertx, Icebreaker and More!

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268 Products in Men's Baselayers

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Image of Smartwool Intraknit Thermal Merino Base Layer Crew - Men's 8 models Smartwool Intraknit Thermal Merino Base Layer Crew - Men's As Low As $60.49 Save Up to 53% Blazin' Deal
Image of TRYBE Tactical Seamless Thermal Legging - Men's - 2-Pack 8 models TRYBE Tactical Seamless Thermal Legging - Men's - 2-Pack As Low As $5.84 Save Up to 85% Blazin' Deal
Image of Smartwool Intraknit Merino 200 Crew - Men's 7 models Smartwool Intraknit Merino 200 Crew - Men's As Low As $99.49 Save Up to 34% Blazin' Deal
Image of Huto Lifestyle Merino Wool 150GSM Base Layer Hoodie 6 models Huto Lifestyle Merino Wool 150GSM Base Layer Hoodie List: $114.99 $86.24 Save 25%
Image of Smartwool Merino 250 Baselayer Bottom - Men's 18 models Smartwool Merino 250 Baselayer Bottom - Men's As Low As $64.49 Save Up to 48% Blazin' Deal
Image of Smartwool Merino 250 Baselayer Crew - Men's 26 models Smartwool Merino 250 Baselayer Crew - Men's As Low As $50.49 Save Up to 60% Blazin' Deal
Image of Smartwool Classic All-Season Merino Base Layer Crew - Men's 17 models Smartwool Classic All-Season Merino Base Layer Crew - Men's As Low As $53.89 Save Up to 46% Free 2 Day Shipping
Image of Smartwool Classic Thermal Merino Base Layer Crew - Men's 14 models Smartwool Classic Thermal Merino Base Layer Crew - Men's As Low As $75.99 Save Up to 34% On Sale
Image of Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's 16 models Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Men's As Low As $69.99 Save Up to 46% On Sale
Image of Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's 11 models Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's As Low As $74.79 Save Up to 25% Blazin' Deal
Image of Icebreaker Merino 200 Oasis SS Crewe - Men's 18 models Icebreaker Merino 200 Oasis SS Crewe - Men's As Low As $46.49 Save Up to 51% Blazin' Deal
Image of Columbia Midweight Stretch Long Sleeve Top - Men's 5 models Columbia Midweight Stretch Long Sleeve Top - Men's List: $55.00 $44.00 Save 20% On Sale
Image of Vertx Merino Base Layer Hoody - Men's Vertx Merino Base Layer Hoody - Men's List: $128.69 $95.99 Save 25% Final Sale
Image of 221B Tactical Equinoxx K2 Thermal Baselayer - Men's 5 models 221B Tactical Equinoxx K2 Thermal Baselayer - Men's As Low As $62.49 Save Up to 58% Blazin' Deal
Image of Icebreaker Merino 260 ZoneKnit Leggings - Men's 2 models Icebreaker Merino 260 ZoneKnit Leggings - Men's List: $175.00 $99.99 Save 43% On Sale
Image of Smartwool Merino 250 Baselayer 3/4 Bottom - Men's 6 models Smartwool Merino 250 Baselayer 3/4 Bottom - Men's As Low As $45.49 Save Up to 60% Blazin' Deal
Image of Rab Sonic Long Sleeve Zip - Men's 16 models Rab Sonic Long Sleeve Zip - Men's As Low As $40.99 Save Up to 35% Blazin' Deal
Image of Smartwool Classic All-Season Merino Bottom Base Layer - Men's 5 models Smartwool Classic All-Season Merino Bottom Base Layer - Men's List: $100.00 $89.49 Save 11% Free 2 Day Shipping
Image of Vertx Merino Base Layer Pant - Men's Vertx Merino Base Layer Pant - Men's List: $87.44 $74.99 Save 14% 18% Bonus Bucks
Image of Kryptek Theos Merino Bottoms - Men's 6 models Kryptek Theos Merino Bottoms - Men's $99.99 23% Bonus Bucks
Image of Icebreaker Merino 260 Tech Long Sleeve Half Zip Thermal Top - Men's 7 models Icebreaker Merino 260 Tech Long Sleeve Half Zip Thermal Top - Men's As Low As $75.99 Save Up to 44% 18% Bonus Bucks
Image of Icebreaker Merino 260 ZoneKnit Long Sleeve Crew Thermal Top - Men's 3 models Icebreaker Merino 260 ZoneKnit Long Sleeve Crew Thermal Top - Men's As Low As $99.99 Save Up to 43% On Sale
Image of Vertx Trailslacker Pant - Men's 120 models Vertx Trailslacker Pant - Men's List: $83.99 $82.99 Save Up to $1.00 18% Bonus Bucks
Image of Blocker Outdoors Blocker Koretec Heavy Weight Top 1409139 Blocker Outdoors Blocker Koretec Heavy Weight Top 1409139 List: $63.99 $39.99 Save 38% 7% Bonus Bucks
Image of DRIFIRE FR Ultra Lightweight Short Sleeve Tee - Men's 23 models DRIFIRE FR Ultra Lightweight Short Sleeve Tee - Men's As Low As $42.50 Save Up to 46% Final Sale
Image of Icebreaker Merino 200 Oasis Long Sleeve Crewe Thermal Top - Men's 39 models Icebreaker Merino 200 Oasis Long Sleeve Crewe Thermal Top - Men's As Low As $40.49 Save Up to 61% Blazin' Deal
Image of Badlands Pecora Lightweight Merino Crew - Men's 5 models Badlands Pecora Lightweight Merino Crew - Men's As Low As $105.99 Save Up to 12%
Image of Muddy TRX Base Layer Bottoms - Men's 10 models Muddy TRX Base Layer Bottoms - Men's As Low As $27.59 Save Up to $2.40
Image of Black Diamond Coefficient LT Pants - Men's 4 models Black Diamond Coefficient LT Pants - Men's $129.00
Image of Rothco ECWCS Gen III Level II Mid-Weight Underwear Top - Men's 32 models Rothco ECWCS Gen III Level II Mid-Weight Underwear Top - Men's As Low As $43.99 Save Up to 20% On Sale
Image of Columbia Midweight Stretch Tight - Men's 5 models Columbia Midweight Stretch Tight - Men's List: $55.00 $44.00 Save 20%
Image of Black Diamond Coefficient LT QZ Po - Men's 5 models Black Diamond Coefficient LT QZ Po - Men's As Low As $72.49 Save Up to 62% Blazin' Deal
Image of First Lite Furnace Long John - Men's 15 models First Lite Furnace Long John - Men's $130.00 Newly Added
Image of Vertx Full Guard Performance Shirt - Men's 21 models Vertx Full Guard Performance Shirt - Men's As Low As $41.99 Save Up to 14% 18% Bonus Bucks
Image of Rothco Midweight Thermal Knit Bottom 3 models Rothco Midweight Thermal Knit Bottom As Low As $25.99 Save Up to 16%
Image of Condor Outdoor Base II Base Layer - Crew 15 models Condor Outdoor Base II Base Layer - Crew As Low As $18.49 Save Up to 37% Blazin' Deal
Image of Muddy TRX Base Layer Crew Top - Men's 10 models Muddy TRX Base Layer Crew Top - Men's As Low As $27.49 Save Up to $3.40
Image of Under Armour Tactical HeatGear Compression Short Sleeve V-Neck Shirt - Men's 4 models Under Armour Tactical HeatGear Compression Short Sleeve V-Neck Shirt - Men's As Low As $24.99 Save Up to 28% 9% Bonus Bucks
Image of Rothco Gen III Silk Weight Underwear Top 13 models Rothco Gen III Silk Weight Underwear Top As Low As $21.99 Save Up to 23% 12% Bonus Bucks
Image of ScentLok ScentLok Climafleece BaseSlayer Bottom 1409166 ScentLok ScentLok Climafleece BaseSlayer Bottom 1409166 $109.99
Image of Rothco Gen III Silk Weight Bottoms - Men's 18 models Rothco Gen III Silk Weight Bottoms - Men's As Low As $17.99 Save Up to 21% 10% Bonus Bucks
Image of ScentLok ScentLok Climafleece BaseSlayer Bottom ScentLok ScentLok Climafleece BaseSlayer Bottom List: $99.99 $93.99 Save $6.00
Image of ScentLok ScentLok Climafleece BaseSlayer Bottom 1409167 ScentLok ScentLok Climafleece BaseSlayer Bottom 1409167 $109.99
Image of Habit Buck Hills Base Layer Pant - Men's 4 models Habit Buck Hills Base Layer Pant - Men's As Low As $24.99
Image of Icebreaker Merino 150 Anatomica SS Crewe - Men's 9 models Icebreaker Merino 150 Anatomica SS Crewe - Men's As Low As $56.49 Save Up to 29% Blazin' Deal
Image of 221B Tactical Equinoxx Stage 3 Ultra-Thermal Mock - Men's 6 models 221B Tactical Equinoxx Stage 3 Ultra-Thermal Mock - Men's List: $139.99 $119.00 Save Up to 15% 21% Bonus Bucks
Image of DRIFIRE Prime FR Mid-Weight Soft Compression Short Sleeve Tee - Men's 7 models DRIFIRE Prime FR Mid-Weight Soft Compression Short Sleeve Tee - Men's As Low As $65.71 Save Up to 46%
Image of Browning Merino Crew Long Sleeve Baselayer Shirt - Mens 6 models Browning Merino Crew Long Sleeve Baselayer Shirt - Mens As Low As $63.79 Save Up to 20%
Image of Browning Merino Hooded Shirt - Mens 6 models Browning Merino Hooded Shirt - Mens As Low As $74.79 Save Up to 25%
Image of Rothco Mock Turtleneck Dickie 5 models Rothco Mock Turtleneck Dickie As Low As $8.99 Save Up to 25% 7% Bonus Bucks
Image of 5.11 Tactical CAMS S/S Baselayer - Mens 11 models 5.11 Tactical CAMS S/S Baselayer - Mens List: $71.00 $66.00 Save $5.00
Image of First Lite Wick Short Sleeve Crew - Men's 30 models First Lite Wick Short Sleeve Crew - Men's $85.00 Newly Added
Image of Browning Merino 1/4 Zip Shirt - Mens 6 models Browning Merino 1/4 Zip Shirt - Mens As Low As $77.39 Save Up to 23%
Image of Browning Merino Pant - Mens 6 models Browning Merino Pant - Mens As Low As $63.79 Save Up to 20%
Image of Browning Gunner Long Sleeve Baselayer Shirt - Mens 12 models Browning Gunner Long Sleeve Baselayer Shirt - Mens List: $49.99 $47.99 Save $2.00
Image of TRYBE Tactical Seamless Thermal Long-Sleeve Shirt - Men's - 2-Pack TRYBE Tactical Seamless Thermal Long-Sleeve Shirt - Men's - 2-Pack List: $44.99 $35.99 Save 20%
Image of DRIFIRE FR Ultra Lightweight Long Sleeve Tee - Men's 25 models DRIFIRE FR Ultra Lightweight Long Sleeve Tee - Men's As Low As $76.00 Save 20%
Image of Habit Men's Siesta Cape Long Sleeve Perf Tee 1409638 Habit Men's Siesta Cape Long Sleeve Perf Tee 1409638 List: $33.99 $32.99 Save $1.00
Image of Muddy Nucleus Heated Bottoms - Men's 4 models Muddy Nucleus Heated Bottoms - Men's List: $174.99 $149.99 Save 14%
Image of Smartwool Intraknit Thermal Merino Base Layer 3/4 Bottom - Men's Smartwool Intraknit Thermal Merino Base Layer 3/4 Bottom - Men's List: $120.00 $40.49 Save 66% Blazin' Deal
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