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.


DAKINE Grant Crew Top - Men
DAKINE Grant Crew Top - Men's Shadow/Black
On sale - now $24.72 - was $44.95

Columbia Baselayer Midweight Top - Men
Columbia Baselayer Midweight Top - Men's
On sale - now $26.97 - was $44.95

Saga Tek Crewneck Shirt - Men
Saga Tek Crewneck Shirt - Men's
On sale - now $26.97 - was $44.95

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 Base 2.0 Crew - Men
Under Armour Base 2.0 Crew - Men's
On sale - now $30.24 - was $54.99

Saga Tek Pullover Hoodie - Men
Saga Tek Pullover Hoodie - Men's
On sale - now $32.97 - was $54.95

Under Armour Coldgear Infrared Evo CG Mock Top - Men
Under Armour Coldgear Infrared Evo CG Mock Top - Men's
On sale - now $32.99 - was $54.99

Under Armour Coldgear Infrared Evo Crew - Men
Under Armour Coldgear Infrared Evo Crew - Men's
On sale - now $32.99 - was $54.99

Patagonia Capilene Lightweight Crew Long-Sleeve Shirt - Men
Patagonia Capilene Lightweight Crew Long-Sleeve Shirt - Men's
On sale - now $34.3 - was $49

Under Armour Base 2.0 1/4-Zip Top - Men
Under Armour Base 2.0 1/4-Zip Top - Men's
On sale - now $35.99 - was $59.99

Duckworth Maverick T-Shirt - Men
Duckworth Maverick T-Shirt - Men's
$39.95

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

Helly Hansen Dry Stripe Crew Top - Men
Helly Hansen Dry Stripe Crew Top - Men's
$39.95

Under Armour Scent Control Nutech 1/4-Zip Top - Men
Under Armour Scent Control Nutech 1/4-Zip Top - Men's
On sale - now $40.5 - was $89.99

Patagonia Capilene Midweight Crew Top - Men
Patagonia Capilene Midweight Crew Top - Men's
On sale - now $41.23 - was $59

Under Armour Base 3.0 Crew - Men
Under Armour Base 3.0 Crew - Men's
On sale - now $41.24 - 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 $41.24 - was $74.99

Patagonia Capilene Lightweight Zip-Neck Top - Men
Patagonia Capilene Lightweight Zip-Neck Top - Men's
On sale - now $41.3 - was $59

Burton Active Crew - Men
Burton Active Crew - Men's
On sale - now $41.97 - was $69.95

FlyLow Gear Clark Top - Men
FlyLow Gear Clark Top - Men's
On sale - now $42.47 - was $84.95

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

Under Armour Base 1.0 Crew - Men
Under Armour Base 1.0 Crew - Men's Black/Steel
$44.99

Burton Expedition 1/4-Zip Top - Men
Burton Expedition 1/4-Zip Top - Men's
On sale - now $44.97 - was $74.95

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

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 $46.74 - was $84.99

Nike Pro Hyperwarm Mock-Neck Shirt - Men
Nike Pro Hyperwarm Mock-Neck Shirt - Men's
On sale - now $47.96 - was $59.95

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

Marmot Harrier Crew Top - Men
Marmot Harrier Crew Top - Men's
$49.95

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

Columbia Arctic Trek Baselayer - Men
Columbia Arctic Trek Baselayer - Men's
On sale - now $54.42 - was $98.95

The North Face TKA 100 Microvelour Glacier 1/4-Zip Top - Men
The North Face TKA 100 Microvelour Glacier 1/4-Zip Top - Men's
$54.95

Marmot Kestrel 1/2-Zip Top - Men
Marmot Kestrel 1/2-Zip Top - Men's Arctic Navy
$54.95

Arc
Arc'teryx Phase AR Crew - Men's
On sale - now $55.3 - was $79

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

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

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

Helly Hansen Active Flow 1/2-Zip Top - Men
Helly Hansen Active Flow 1/2-Zip 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

Marmot Harrier 1/2-Zip Top - Men
Marmot Harrier 1/2-Zip Top - Men's
$59.95

Craft Warm CN Top - Men
Craft Warm CN Top - Men's
On sale - now $59.97 - was $99.95

Bjorn Daehlie Raw Seamless Top - Men
Bjorn Daehlie Raw Seamless Top - Men's Black
On sale - now $59.97 - was $99.95

Burton AK Power Grid Hooded Top - Men
Burton AK Power Grid Hooded Top - Men's
On sale - now $59.97 - was $99.95

Helly Hansen Warm Freeze 1/2-Zip Top - Men
Helly Hansen Warm Freeze 1/2-Zip Top - Men's
On sale - now $59.97 - was $99.95

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

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

Nike Ultimate Dry Short-Sleeve Shirt - Men
Nike Ultimate Dry Short-Sleeve Shirt - Men's
On sale - now $63.96 - was $79.95

Spyder Charger Therma Stretch Zip-Neck Top - Men
Spyder Charger Therma Stretch Zip-Neck Top - Men's Cirrus/Polar/Rage
On sale - now $64.35 - was $99

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

Eider Tignes 1/2-Zip Top - Men
Eider Tignes 1/2-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
$64.99

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

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

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

Mons Royale Original Top - Men
Mons Royale Original Top - Men's
On sale - now $65.97 - was $109.95

Under Armour Gamutlite 1/2-Zip Jacket - Men
Under Armour Gamutlite 1/2-Zip Jacket - Men's
On sale - now $67.49 - was $89.99

Outdoor Research Sequence Zip-Neck Top - Men
Outdoor Research Sequence Zip-Neck Top - Men's
$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
$69

Columbia Heavyweight II Half-Zip Top - Men
Columbia Heavyweight II Half-Zip Top - Men's Graphite/Acid Yellow
$69.99

Ibex Woolies 1 Top - Men
Ibex Woolies 1 Top - Men's
$70

Icebreaker BodyFit 150-Ultralight Anatomica V-Neck Shirt - Men
Icebreaker BodyFit 150-Ultralight Anatomica V-Neck Shirt - Men's
$70

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

Dynafit Thermal 1/2-Zip Shirt - Men
Dynafit Thermal 1/2-Zip Shirt - Men's
On sale - now $71.47 - was $129.95

Mons Royale Temple Tech Hooded Zip Top - Men
Mons Royale Temple Tech Hooded Zip Top - Men's
On sale - now $71.47 - was $129.95

Dynafit TLT 1/2-Zip Top - Men
Dynafit TLT 1/2-Zip Top - Men's
On sale - now $71.97 - was $119.95

Mons Royale 1961 Henley Top - Men
Mons Royale 1961 Henley Top - Men's
On sale - now $71.97 - was $119.95

Mons Royale Ninja Jersey Crew Top - Men
Mons Royale Ninja Jersey Crew Top - Men's
On sale - now $71.97 - was $119.95

Ibex OD Henley Shirt - Men
Ibex OD Henley Shirt - Men's
On sale - now $74.75 - was $115

Adidas Primeknit Parley T-Shirt - Men
Adidas Primeknit Parley T-Shirt - Men's
$74.95

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

Norr Wool Round Neck Top - Men
Norr Wool Round Neck Top - Men's
On sale - now $75 - was $100

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

Arc
Arc'teryx Satoro AR Crew Top - Men's
On sale - now $77.35 - was $119

Icebreaker BodyFit 200 Zone Zip-Neck Top - Men
Icebreaker BodyFit 200 Zone Zip-Neck Top - Men's
On sale - now $78 - was $120

Icebreaker BodyFit 260 Winter Zone 1/2-Zip Top - Men
Icebreaker BodyFit 260 Winter Zone 1/2-Zip Top - Men's
On sale - now $78 - was $130

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

Ibex Woolies 1 Crew Top - Men
Ibex Woolies 1 Crew Top - Men's
$80

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 Bright Blue
$80

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

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

Marmot Thermo Fleece Hooded Top - Men
Marmot Thermo Fleece Hooded Top - Men's
On sale - now $80.97 - was $134.95

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

Under Armour Base 4.0 Crew - Men
Under Armour Base 4.0 Crew - Men's Lead/Steel
$84.99

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

Ibex Woolies 1 Stripe Crew Top - Men
Ibex Woolies 1 Stripe Crew Top - Men's
$85

Ibex Woolies 1 Zip-Neck Top - Men
Ibex Woolies 1 Zip-Neck Top - Men's
$85

Arc
Arc'teryx Rho LT Zip Top - Men's
On sale - now $87.5 - was $125

Icebreaker Compass Half-Zip Pullover Hoodie - Men
Icebreaker Compass Half-Zip Pullover Hoodie - Men's
On sale - now $88 - was $160

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

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

Norr Wool Zip Neck Top - Men
Norr Wool Zip Neck Top - Men's
On sale - now $90 - was $120

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

Icebreaker Descender Half-Zip Top - Men
Icebreaker Descender Half-Zip Top - Men's
On sale - now $90 - was $180

Ibex Shak T-Neck Jersey - Men
Ibex Shak T-Neck Jersey - Men's
On sale - now $93 - was $155

Mons Royale Motatapu Hooded 1/2-Zip Top - Men
Mons Royale Motatapu Hooded 1/2-Zip Top - Men's
On sale - now $93.47 - was $169.95

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
$95

Norr Wool Hoodie - Men
Norr Wool Hoodie - Men's
On sale - now $97.5 - was $150

Mountain Equipment Eclipse Zip Top - Men
Mountain Equipment Eclipse Zip Top - Men's Light Ocean/Navy/Russet Zips
On sale - now $98.97 - was $164.95

Arc
Arc'teryx Delta LT Zip-Neck Top - Men's Black
$99

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
$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
$100

Marmot Powertherm 1/2-Zip Wool Top - Men
Marmot Powertherm 1/2-Zip Wool Top - Men's
On sale - now $101.97 - was $169.95

Arc
Arc'teryx Satoro AR Zip Neck Top - Men's
On sale - now $104.25 - was $139

SmartWool Midweight Pattern Crew - Men
SmartWool Midweight Pattern Crew - Men's
$105

Mountain Equipment Eclipse Half-Zip Hoodie - Men
Mountain Equipment Eclipse Half-Zip Hoodie - Men's
On sale - now $107.97 - was $179.95

Ortovox Rock N Wool Top - Men
Ortovox Rock N Wool Top - Men's
$108.95

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

Simms Montana Wool Mid Top - Men
Simms Montana Wool Mid Top - Men's
$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

Icebreaker Bodyfit 260 Midweight Tech Top Crewe - Men
Icebreaker Bodyfit 260 Midweight Tech Top Crewe - Men's
$110

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

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

Patagonia Capilene Thermal Weight Hooded Zip-Neck Top - Men
Patagonia Capilene Thermal Weight Hooded Zip-Neck Top - Men's Viking Blue/Navy Blue X-dye
$119

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

Icebreaker Bodyfit 260 Midweight Tech Top 1/2-Zip Crew - Men
Icebreaker Bodyfit 260 Midweight Tech Top 1/2-Zip Crew - Men's
$120

The North Face Summit L1 Baselayer Top - Men
The North Face Summit L1 Baselayer Top - Men's
$124.95

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

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

Mammut Moench Shirt - Men
Mammut Moench Shirt - Men's
$129.95

SmartWool NTS 250 Midweight Hoodie - Men
SmartWool NTS 250 Midweight Hoodie - Men's
$130

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

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

Norr Super One-Piece - Men
Norr Super One-Piece - Men's
On sale - now $139.3 - was $199

Simms Montana Techwool 1/2-Zip Top - Men
Simms Montana Techwool 1/2-Zip Top - Men's
$139.95

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