Men's Base Layer Tops - Activewear
gym, fitness, workout, sports clothing

Clothes you can move freely and feel comfortable in while pushing your physical limits.


Duckworth Maverick T-Shirt - Men
Duckworth Maverick T-Shirt - Men's
On sale - now $25.97 - was $39.95

Helly Hansen Dry Stripe Crew Top - Men
Helly Hansen Dry Stripe Crew Top - Men's Black/High Viz
On sale - now $25.97 - was $39.95

Under Armour Base 1.0 Crew - Men
Under Armour Base 1.0 Crew - Men's
On sale - now $26.99 - was $44.99

Saga Tek Pullover Hoodie - Men
Saga Tek Pullover Hoodie - Men's
On sale - now $27.47 - was $54.95

Under Armour Base 2.0 Crew - Men
Under Armour Base 2.0 Crew - Men's
On sale - now $27.49 - was $54.99

Louis Garneau 2002 Mock Neck Top - Men
Louis Garneau 2002 Mock Neck Top - Men's
On sale - now $29.97 - was $49.95

Under Armour Coldgear Infrared Evo CG Mock Top - Men
Under Armour Coldgear Infrared Evo CG Mock Top - Men's
On sale - now $30.24 - was $54.99

Under Armour Coldgear Infrared Evo Crew - Men
Under Armour Coldgear Infrared Evo Crew - Men's Gold Ore/Dark Orange
On sale - now $30.24 - was $54.99

DAKINE Grant Crew Top - Men
DAKINE Grant Crew Top - Men's
On sale - now $31.46 - was $44.95

Saga Tek Crewneck Shirt - Men
Saga Tek Crewneck Shirt - Men's Grey
On sale - now $31.46 - was $44.95

Patagonia Capilene Lightweight Crew Long-Sleeve Shirt - Men
Patagonia Capilene Lightweight Crew Long-Sleeve Shirt - Men's Nouveau Green
On sale - now $31.85 - was $49

Patagonia Capilene Midweight Crew Top - Men
Patagonia Capilene Midweight Crew Top - Men's
On sale - now $32.45 - was $59

Burton Active Crew - Men
Burton Active Crew - Men's
On sale - now $34.97 - was $69.95

Nike Pro Hyperwarm Mock-Neck Shirt - Men
Nike Pro Hyperwarm Mock-Neck Shirt - Men's
On sale - now $35.97 - was $59.95

Marmot Harrier Crew Top - Men
Marmot Harrier Crew Top - Men's
On sale - now $37.46 - was $49.95

Under Armour Base 3.0 Crew - Men
Under Armour Base 3.0 Crew - Men's
On sale - now $37.49 - was $74.99

Under Armour ColdGear Infrared Scent Control Tevo Mock-Neck Top - Men
Under Armour ColdGear Infrared Scent Control Tevo Mock-Neck Top - Men's
On sale - now $37.49 - was $74.99

FlyLow Gear Clark Top - Men
FlyLow Gear Clark Top - Men's
On sale - now $38.23 - was $84.95

Patagonia Capilene Lightweight Zip-Neck Top - Men
Patagonia Capilene Lightweight Zip-Neck Top - Men's
On sale - now $38.35 - was $59

Marmot Kestrel 1/2-Zip Top - Men
Marmot Kestrel 1/2-Zip Top - Men's Black
On sale - now $38.46 - was $54.95

Marmot Kestrel Long-Sleeve Crew Top - Men
Marmot Kestrel Long-Sleeve Crew Top - Men's
$39.95

Helly Hansen Active Flow 1/2-Zip Top - Men
Helly Hansen Active Flow 1/2-Zip Top - Men's Black
On sale - now $41.96 - was $59.95

Marmot Harrier 1/2-Zip Top - Men
Marmot Harrier 1/2-Zip Top - Men's
On sale - now $41.96 - was $59.95

Under Armour Base 4.0 Crew - Men
Under Armour Base 4.0 Crew - Men's
On sale - now $42.49 - was $84.99

Under Armour ColdGear Infrared Scent Control Tevo Zip-Neck Top - Men
Under Armour ColdGear Infrared Scent Control Tevo Zip-Neck Top - Men's
On sale - now $42.49 - was $84.99

The North Face Light Crew Neck Top - Men
The North Face Light Crew Neck Top - Men's
$44.95

Under Armour Scent Control Nutech 1/4-Zip Top - Men
Under Armour Scent Control Nutech 1/4-Zip Top - Men's Realtree Max 5/Dynamite
On sale - now $44.99 - was $89.99

Spyder Venom Crew - Men
Spyder Venom Crew - Men's
On sale - now $45 - was $75

Nike Ultimate Dry Short-Sleeve Shirt - Men
Nike Ultimate Dry Short-Sleeve Shirt - Men's
On sale - now $47.97 - was $79.95

Icebreaker BodyFit 150-Ultralight Anatomica V-Neck Shirt - Men
Icebreaker BodyFit 150-Ultralight Anatomica V-Neck Shirt - Men's
On sale - now $49 - was $70

Kavu Ridgway 1/2-Zip Top - Long-Sleeve - Men
Kavu Ridgway 1/2-Zip Top - Long-Sleeve - Men's
$49.95

Castelli 10m Lung Warmer Top - Men
Castelli 10m Lung Warmer Top - Men's
$49.95

Simms Waderwick Core Crewneck Shirt - Men
Simms Waderwick Core Crewneck Shirt - Men's Coal
$49.95

Craft Warm CN Top - Men
Craft Warm CN Top - Men's
On sale - now $49.97 - was $99.95

Helly Hansen Warm Freeze 1/2-Zip Top - Men
Helly Hansen Warm Freeze 1/2-Zip Top - Men's Evening Blue Print
On sale - now $49.97 - was $99.95

Arc
Arc'teryx Phase AR Crew - Men's
On sale - now $51.35 - was $79

Burton Expedition 1/4-Zip Top - Men
Burton Expedition 1/4-Zip Top - Men's
On sale - now $52.46 - was $74.95

Ibex Woolies 1 Top - Men
Ibex Woolies 1 Top - Men's
On sale - now $52.5 - was $70

Bjorn Daehlie Raw Seamless Top - Men
Bjorn Daehlie Raw Seamless Top - Men's
On sale - now $54.97 - was $99.95

Burton AK Power Grid Hooded Top - Men
Burton AK Power Grid Hooded Top - Men's
On sale - now $54.97 - was $99.95

Mons Royale Original Top - Men
Mons Royale Original Top - Men's
On sale - now $54.97 - was $109.95

Adidas Primeknit Parley T-Shirt - Men
Adidas Primeknit Parley T-Shirt - Men's
On sale - now $56.21 - was $74.95

Eider Tignes 1/2-Zip Top - Men
Eider Tignes 1/2-Zip Top - Men's
On sale - now $58.48 - was $129.95

Under Armour Gamutlite 1/2-Zip Jacket - Men
Under Armour Gamutlite 1/2-Zip Jacket - Men's Anthracite/Amalgam Gray
On sale - now $58.49 - was $89.99

Patagonia Capilene Midweight Crew Top - Men
Patagonia Capilene Midweight Crew Top - Men's
$59

Mammut Trovat Pro Half-Zip Top - Men
Mammut Trovat Pro Half-Zip Top - Men's
On sale - now $59.37 - was $98.95

Ibex Woolies 1 Stripe Crew Top - Men
Ibex Woolies 1 Stripe Crew Top - Men's
On sale - now $59.5 - was $85

Ibex Woolies 1 Zip-Neck Top - Men
Ibex Woolies 1 Zip-Neck Top - Men's
On sale - now $59.5 - was $85

Simms Waderwick Thermal Top - Men
Simms Waderwick Thermal Top - Men's Gunmetal
$59.95

The North Face Warm Zip-Neck Top - Men
The North Face Warm Zip-Neck Top - Men's
$59.95

Outdoor Research Sequence Crew Top - Men
Outdoor Research Sequence Crew Top - Men's
$59.95

Bjorn Daehlie Compete Top - Men
Bjorn Daehlie Compete Top - Men's
$59.95

Dynafit TLT 1/2-Zip Top - Men
Dynafit TLT 1/2-Zip Top - Men's
On sale - now $59.97 - was $119.95

Mons Royale Ninja Jersey Crew Top - Men
Mons Royale Ninja Jersey Crew Top - Men's
On sale - now $59.97 - was $119.95

Under Armour Base 2.0 1/4-Zip Top - Men
Under Armour Base 2.0 1/4-Zip Top - Men's
$59.99

Ibex Woolies 1 Crew Top - Men
Ibex Woolies 1 Crew Top - Men's
On sale - now $60 - was $80

Icebreaker BodyFit 150-Ultralite Anatomica Tank Top - Men
Icebreaker BodyFit 150-Ultralite Anatomica Tank Top - Men's
$60

Icebreaker Everyday Crew Top - Men
Icebreaker Everyday Crew Top - Men's
$60

686 Airhole Thermal One Piece Suit - Men
686 Airhole Thermal One Piece Suit - Men's
On sale - now $60 - was $100

Icebreaker Everyday Half-Zip Top - Men
Icebreaker Everyday Half-Zip Top - Men's Cargo
On sale - now $60 - was $80

Arc
Arc'teryx Phase AR Zip Neck Top - Men's
On sale - now $62.3 - was $89

Minus 33 Allagash Lightweight Zip-Neck Top - Men
Minus 33 Allagash Lightweight Zip-Neck Top - Men's
$64.95

Minus 33 Ticonderoga Lightweight Crew Top - Men
Minus 33 Ticonderoga Lightweight Crew Top - Men's
$64.95

Mons Royale Temple Tech Hooded Zip Top - Men
Mons Royale Temple Tech Hooded Zip Top - Men's
On sale - now $64.97 - was $129.95

Under Armour Coldgear Infrared Evo CG 1/4 Zip Top - Men
Under Armour Coldgear Infrared Evo CG 1/4 Zip Top - Men's Black/Steel
$64.99

Under Armour Base 2.0 Hooded Top - Men
Under Armour Base 2.0 Hooded Top - Men's
$64.99

Norr Wool Round Neck Top - Men
Norr Wool Round Neck Top - Men's
On sale - now $65 - was $100

Minus 33 Chocorua Midweight Crew Top - Men
Minus 33 Chocorua Midweight Crew Top - Men's
$65.95

Minus 33 Isolation Midweight Zip-Neck Top - Men
Minus 33 Isolation Midweight Zip-Neck Top - Men's
$65.95

Simms Montana Wool Mid Top - Men
Simms Montana Wool Mid Top - Men's
On sale - now $65.97 - was $109.95

ROJK Superwear PrimaLoft SuperBase Sweater - Men
ROJK Superwear PrimaLoft SuperBase Sweater - Men's
On sale - now $65.97 - was $109.95

Icebreaker Bodyfit 260 Midweight Tech Top Crewe - Men
Icebreaker Bodyfit 260 Midweight Tech Top Crewe - Men's
On sale - now $66 - was $110

Outdoor Research Sequence Zip-Neck Top - Men
Outdoor Research Sequence Zip-Neck Top - Men's Black
$68.95

Arc
Arc'teryx Phase SL Crew Short-Sleeve Baselayer - Men's
$69

Patagonia Capilene Midweight Zip-Neck Top - Men
Patagonia Capilene Midweight Zip-Neck Top - Men's Navy Blue/Channel Blue X-dye
$69

Columbia Arctic Trek Baselayer - Men
Columbia Arctic Trek Baselayer - Men's
On sale - now $69.26 - was $98.95

Spyder Charger Therma Stretch Zip-Neck Top - Men
Spyder Charger Therma Stretch Zip-Neck Top - Men's
On sale - now $69.3 - was $99

Icebreaker Everyday Long Sleeve Crew - Men
Icebreaker Everyday Long Sleeve Crew - Men's Awesome
$70

Arc
Arc'teryx Satoro AR Crew Top - Men's
On sale - now $71.4 - was $119

Patagonia Capilene Thermal Weight Hooded Zip-Neck Top - Men
Patagonia Capilene Thermal Weight Hooded Zip-Neck Top - Men's
On sale - now $71.4 - was $119

Arc
Arc'teryx Delta LT Zip-Neck Top - Men's Blaze
On sale - now $74.25 - was $99

Arc
Arc'teryx Phase SL Crew Top - Men's Rigel
$75

Icebreaker Bodyfit 180 Lightweight Anatomica Rib Crewe Shirt - Short-Sleeve - Men
Icebreaker Bodyfit 180 Lightweight Anatomica Rib Crewe Shirt - Short-Sleeve - Men's
$75

SmartWool Merino 150 Baselayer - Men
SmartWool Merino 150 Baselayer - Men's
$75

SmartWool Merino 150 Pattern Baselayer - Men
SmartWool Merino 150 Pattern Baselayer - Men's
$75

Ortovox Rock N Wool Long-Sleeve Top - Men
Ortovox Rock N Wool Long-Sleeve Top - Men's
On sale - now $76.26 - was $108.95

Ibex Shak T-Neck Jersey - Men
Ibex Shak T-Neck Jersey - Men's
On sale - now $77.5 - was $155

Norr Wool Zip Neck Top - Men
Norr Wool Zip Neck Top - Men's
On sale - now $78 - was $120

The North Face Expedition Zip Neck Top - Men
The North Face Expedition Zip Neck Top - Men's
$79.95

Columbia Diamond Peak 1/2-Zip Top - Men
Columbia Diamond Peak 1/2-Zip Top - Men's
$79.99

Icebreaker BodyFit 150-Ultralight Anatomica Crew - Men
Icebreaker BodyFit 150-Ultralight Anatomica Crew - Men's
$80

SmartWool Merino 150 Baselayer - Men
SmartWool Merino 150 Baselayer - Men's
$80

SmartWool Merino 150 Pattern Baselayer - Men
SmartWool Merino 150 Pattern Baselayer - Men's Taupe
$80

SmartWool Micro 150 Combo T-Shirt - Men
SmartWool Micro 150 Combo T-Shirt - Men's
$80

SmartWool Micro 150 Pattern Crew - Men
SmartWool Micro 150 Pattern Crew - Men's Cinnamon
$80

Mountain Equipment Eclipse Zip Top - Men
Mountain Equipment Eclipse Zip Top - Men's
On sale - now $82.47 - was $164.95

Simms Montana Techwool 1/2-Zip Top - Men
Simms Montana Techwool 1/2-Zip Top - Men's
On sale - now $83.97 - was $139.95

Icebreaker Bodyfit 260 Midweight Tech Top 1/2-Zip Crew - Men
Icebreaker Bodyfit 260 Midweight Tech Top 1/2-Zip Crew - Men's Black/Black/Black
On sale - now $84 - was $120

Rab Flux Pull-On Top - Men
Rab Flux Pull-On Top - Men's
$84.95

Mons Royale Motatapu Hooded 1/2-Zip Top - Men
Mons Royale Motatapu Hooded 1/2-Zip Top - Men's Spice/Navy/Char
On sale - now $84.97 - was $169.95

Arc
Arc'teryx Phase SL Zip Neck Top - Men's
$85

Outdoor Research Radiant LT Zip Top - Men
Outdoor Research Radiant LT Zip Top - Men's
$89.95

Mountain Equipment Eclipse Half-Zip Hoodie - Men
Mountain Equipment Eclipse Half-Zip Hoodie - Men's
On sale - now $89.97 - was $179.95

Icebreaker BodyFit 200 Oasis Crew - Men
Icebreaker BodyFit 200 Oasis Crew - Men's Black
$90

Norr Wool Hoodie - Men
Norr Wool Hoodie - Men's Jester Red
On sale - now $90 - was $150

SmartWool Micro 150 Henley - Men
SmartWool Micro 150 Henley - Men's
$90

Outdoor Research Radiant Hybrid Pullover Fleece Jacket - Men
Outdoor Research Radiant Hybrid Pullover Fleece Jacket - Men's
$94.95

SmartWool NTS Midweight Crew - Men
SmartWool NTS Midweight Crew - Men's Black
$95

Mammut Moench Shirt - Men
Mammut Moench Shirt - Men's Black
On sale - now $97.46 - was $129.95

Duckworth Comet Henley Shirt - Men
Duckworth Comet Henley Shirt - Men's
$99.95

Duckworth Comet Long-Sleeve Crew - Men
Duckworth Comet Long-Sleeve Crew - Men's
$99.95

Duckworth Maverick Crew - Men
Duckworth Maverick Crew - Men's
$99.95

Airblaster Hoodless Ninja Suit - Men
Airblaster Hoodless Ninja Suit - Men's
$99.95

Icebreaker BodyFit 200 Oasis Zip-Neck Top - Men
Icebreaker BodyFit 200 Oasis Zip-Neck Top - Men's Black
$100

Ibex Woolies 2 Crew Top - Men
Ibex Woolies 2 Crew Top - Men's
$100

SmartWool NTS Midweight Zip Top - Men
SmartWool NTS Midweight Zip Top - Men's Light Gray Heather
$100

SmartWool Midweight Pattern Crew - Men
SmartWool Midweight Pattern Crew - Men's Black/Light Gray
$105

Icebreaker Descender Half-Zip Top - Men
Icebreaker Descender Half-Zip Top - Men's
On sale - now $108 - was $180

Outdoor Research Radiant Hybrid Hooded Top - Men
Outdoor Research Radiant Hybrid Hooded Top - Men's Glacier/Baltic
$109.95

Airblaster Ninja Suit - Men
Airblaster Ninja Suit - Men's
$109.95

Marmot Neothermo 1/2-Zip Fleece Top - Men
Marmot Neothermo 1/2-Zip Fleece Top - Men's
$109.95

Icebreaker Bodyfit 200 Zone Crew - Men
Icebreaker Bodyfit 200 Zone Crew - Men's
$110

SmartWool NTS Mid 250 Pattern Zip Top - Men
SmartWool NTS Mid 250 Pattern Zip Top - Men's Black
$110

Marmot Powertherm 1/2-Zip Wool Top - Men
Marmot Powertherm 1/2-Zip Wool Top - Men's
On sale - now $110.47 - was $169.95

Minus 33 Kobuk Expedition Zip-Neck Top - Men
Minus 33 Kobuk Expedition Zip-Neck Top - Men's
$110.95

Ibex Woolies 2 Zip-Neck Top - Men
Ibex Woolies 2 Zip-Neck Top - Men's
$115

Craft Stars and Stripes Active Extreme Set - Men
Craft Stars and Stripes Active Extreme Set - Men's
$119.95

Icebreaker BodyFit 200 Zone Zip-Neck Top - Men
Icebreaker BodyFit 200 Zone Zip-Neck Top - Men's
$120

Rab Merino Plus 160 Hooded Top - Men
Rab Merino Plus 160 Hooded Top - Men's
$124.95

Arc
Arc'teryx Rho LT Zip Top - Men's Black
$125

The North Face Progressor Top - Men
The North Face Progressor Top - Men's
$128.95

Norr Super One-Piece - Men
Norr Super One-Piece - Men's
On sale - now $129.35 - was $199

SmartWool NTS Midweight 250 Color Block Pullover Hoodie - Men
SmartWool NTS Midweight 250 Color Block Pullover Hoodie - Men's Black
$130

Mountain Equipment Eclipse Half-Zip Hoodie - Men
Mountain Equipment Eclipse Half-Zip Hoodie - Men's
$134.95

Arc
Arc'teryx Satoro AR Zip Neck Top - Men's
$139

Arc
Arc'teryx Rho AR Zip-Neck Top - Men's
$145

Norr Super Hoodie - Men
Norr Super Hoodie - Men's
$149

Mountain Equipment Eclipse Zip Top - Men
Mountain Equipment Eclipse Zip Top - Men's
$164.95

Ibex Shak Classic Full-Zip Top - Men
Ibex Shak Classic Full-Zip Top - Men's
$165

SmartWool Propulsion 60 Hybrid Jacket - 1/2-Zip - Men
SmartWool Propulsion 60 Hybrid Jacket - 1/2-Zip - Men's
$180

Airblaster Merino Wool Ninja Suit - Men
Airblaster Merino Wool Ninja Suit - Men's
$199.95