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.


ExOfficio Men
ExOfficio Men's Give-N-Go V Tee
On sale - now $17.99 - was $39.95

ExOfficio Men
ExOfficio Men's Give-N-Go V Tee
On sale - now $17.99 - was $39.95

Carhartt Men
Carhartt Men's Base Force Extremes Lightweight SS T-Shirt
On sale - now $19.99 - was $24.99

Carhartt Men
Carhartt Men's Base Force Extremes Lightweight SS T-Shirt
On sale - now $19.99 - was $24.99

ExOfficio Men
ExOfficio Men's Give-N-Go V Tee
On sale - now $19.99 - was $39.95

Terramar Men
Terramar Men's Ecolator CS 3.0 Long Sleeve Crew Top
On sale - now $19.99 - was $50

Regatta Men
Regatta Men's Beckley Top
On sale - now $23.99 - was $29.95

Helly Hansen Men
Helly Hansen Men's HH Tech T-Shirt
$25

Helly Hansen Men
Helly Hansen Men's HH Tech T-Shirt
$25

Carhartt Men
Carhartt Men's Base Force Cotton Super Cold Weather Crewneck Top
On sale - now $25.99 - was $29.95

Carhartt Men
Carhartt Men's Base Force Cotton Super Cold Weather Crewneck Top
On sale - now $25.99 - was $29.95

ExOfficio Men
ExOfficio Men's Give-N-Go Sport Mesh SL Crew
On sale - now $26.99 - was $41.95

ExOfficio Men
ExOfficio Men's Give-N-Go Tee
On sale - now $28.99 - was $39.95

ExOfficio Men
ExOfficio Men's Give-N-Go Tee
On sale - now $29.99 - was $39.95

ExOfficio Men
ExOfficio Men's Give-N-Go Tee
On sale - now $29.99 - was $39.95

Craghoppers Men
Craghoppers Men's First Layer LS T-Shirt
On sale - now $30.99 - was $44.95

Craghoppers Men
Craghoppers Men's First Layer LS T-Shirt
On sale - now $30.99 - was $44.95

ExOfficio Men
ExOfficio Men's Give-and-Go Performance Base Layer Crew Neck Top
On sale - now $31.99 - was $59.95

ExOfficio Men
ExOfficio Men's Give-and-Go Performance Base Layer Crew Neck Top
On sale - now $31.99 - was $59.95

Carhartt Men
Carhartt Men's Base Force Extremes Cold Weather Quarter Zip Top
On sale - now $32.99 - was $44.95

ExOfficio Men
ExOfficio Men's Give-N-Go V Tee
On sale - now $32.99 - was $39.95

Carhartt Men
Carhartt Men's Base Force Extremes Cold Weather Crewneck
On sale - now $33.99 - was $39.95

ExOfficio Men
ExOfficio Men's Give-N-Go Sport Mesh SL Crew
On sale - now $33.99 - was $41.95

ExOfficio Men
ExOfficio Men's Give-N-Go Sport Mesh SL Crew
On sale - now $33.99 - was $41.95

ExOfficio Men
ExOfficio Men's Give-N-Go Sport Mesh SL Crew
On sale - now $33.99 - was $41.95

Men
Men's H2 Core Silkweight SS Shirt
$34.95

Men
Men's H2 Core Silkweight SS Shirt
$34.95

Carhartt Men
Carhartt Men's Base Force Extremes Cold Weather Camo Crewneck
On sale - now $34.99 - was $44.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Resolution IR Crew
On sale - now $34.99 - was $59.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Resolution IR Crew
On sale - now $34.99 - was $59.95

Carhartt Men
Carhartt Men's Base Force Extremes Cold Weather Quarter Zip Top
On sale - now $36.99 - was $49.95

Carhartt Men
Carhartt Men's Base Force Extremes Super Cold Weather Crewneck
On sale - now $38.99 - was $49.95

ExOfficio Men
ExOfficio Men's Give-N-Go Tee
$39.95

ExOfficio Men
ExOfficio Men's Give-N-Go Tee
$39.95

ExOfficio Men
ExOfficio Men's Give-N-Go Tee
$39.95

ExOfficio Men
ExOfficio Men's Give-N-Go V Tee
$39.95

ExOfficio Men
ExOfficio Men's Give-N-Go V Tee
$39.95

ExOfficio Men
ExOfficio Men's Give-N-Go V Tee
$39.95

Helly Hansen Men
Helly Hansen Men's HH Lifa Stripe Crew Top
$40

NRS Men
NRS Men's H2 Core Silkweight LS Shirt
$39.95

NRS Men
NRS Men's H2 Core Silkweight LS Shirt
$39.95

NRS Men
NRS Men's H2 Core Silkweight LS Shirt
$39.95

Sherpa Men
Sherpa Men's Rinchen SS Tee
$39.95

Sherpa Men
Sherpa Men's Rinchen SS Tee
$39.95

Marmot Men
Marmot Men's Lightweight Kestrel LS Crew
$40

Marmot Men
Marmot Men's Lightweight Kestrel LS Crew
$40

Marmot Men
Marmot Men's Lightweight Kestrel LS Crew
$40

Columbia Men
Columbia Men's Midweight Stretch Long Sleeve Top
On sale - now $40.99 - was $54.95

Columbia Men
Columbia Men's Midweight Stretch Long Sleeve Top
On sale - now $40.99 - was $54.95

Columbia Men
Columbia Men's Midweight Stretch Long Sleeve Top
On sale - now $40.99 - was $54.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Resolution IR 1/4 Zip Up
On sale - now $40.99 - was $69.95

Carhartt Men
Carhartt Men's Base Force Extremes Super Cold Weather Quarter Zip Top
On sale - now $43.99 - was $54.99

Columbia Men
Columbia Men's Midweight Stretch Long Sleeve Top
On sale - now $43.99 - was $55

Dare 2B Men
Dare 2B Men's Interfuse Core Stretch
On sale - now $44.99 - was $59.95

Dare 2B Men
Dare 2B Men's Interfuse Core Stretch
On sale - now $44.99 - was $59.95

Scott USA Men
Scott USA Men's Defined Light Pullover
On sale - now $44.99 - was $69.95

Sherpa Men
Sherpa Men's Rinchen Zip Tee
On sale - now $44.99 - was $59.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Midweight Freedry Merino Hybrid Long Sleeve
On sale - now $46.99 - was $79.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Midweight Freedry Merino Hybrid Long Sleeve
On sale - now $46.99 - was $79.95

Sherpa Men
Sherpa Men's Rinchen Zip Tee
On sale - now $46.99 - was $59.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Resolution IR 1/4 Zip Up
On sale - now $48.97 - was $69.95

Craft Men
Craft Men's FuseKnit Comfort Roung Neck LS Top
$49.95

Craft Men
Craft Men's FuseKnit Comfort Roung Neck LS Top
$49.95

Sherpa Men
Sherpa Men's Rinchen LS Tee
$49.95

Sherpa Men
Sherpa Men's Rinchen LS Tee
$49.95

Hot Chillys Men
Hot Chillys Men's Micro Elite Chamois 8K Crewneck
On sale - now $49.99 - was $64.95

Marmot Men
Marmot Men's Midweight Harrier LS Crew
$50

Columbia Men
Columbia Men's Heavyweight II Long Sleeve Half Zip
On sale - now $51.99 - was $70

Columbia Men
Columbia Men's Heavyweight II Long Sleeve Half Zip
On sale - now $51.99 - was $69.95

Icebreaker Men
Icebreaker Men's Anatomica SS V Neck Top
On sale - now $51.99 - was $69.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Midweight Freedry Merino Hybrid 1/4 Zip Up
On sale - now $52.99 - was $89.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Midweight Freedry Merino Hybrid 1/4 Zip Up
On sale - now $52.99 - was $89.95

Fjallraven Men
Fjallraven Men's Abisko Shade SS Tee
$54.95

NRS Men
NRS Men's H2Core Silkweight Hoodie
$54.95

NRS Men
NRS Men's H2Core Silkweight Hoodie
$54.95

NRS Men
NRS Men's H2Core Silkweight Hoodie
$54.95

Arcteryx Men
Arcteryx Men's Phase SL SS Crew
On sale - now $54.99 - was $69

Fjallraven Men
Fjallraven Men's Abisko Shade SS Tee
$55

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Midweight Freedry Merino Hybrid Long Sleeve
On sale - now $55.97 - was $79.95

Scott USA Men
Scott USA Men's Defined Mid Pullover
On sale - now $57.99 - was $89.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Heavyweight Freedry Merino Baselayer 1/4 Zip Up
On sale - now $58.99 - was $98.95

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Heavyweight Freedry Merino Baselayer 1/4 Zip Up
On sale - now $58.99 - was $98.95

The North Face Men
The North Face Men's Warm L/S Zip Neck
$59.95

The North Face Men
The North Face Men's Warm L/S Zip Neck
$59.95

Helly Hansen Men
Helly Hansen Men's HH Lifa Active Light Short Sleeve Polo
$60

Helly Hansen Men
Helly Hansen Men's HH Lifa Active Light Short Sleeve Polo
$60

Marmot Men
Marmot Men's Midweight Harrier 1/2 Zip Top
$60

Marmot Men
Marmot Men's Midweight Harrier 1/2 Zip Top
$60

Marmot Men
Marmot Men's Midweight Harrier 1/2 Zip Top
$60

Eddie Bauer First Ascent Men
Eddie Bauer First Ascent Men's Midweight Freedry Merino Hybrid 1/4 Zip Up
On sale - now $62.97 - was $89.95

La Sportiva Men
La Sportiva Men's Artic LS Top
On sale - now $63.99 - was $99

Obermeyer Transport Tech Baselayer Top
Obermeyer Transport Tech Baselayer Top
$64.5

Obermeyer Transport Tech Baselayer Top
Obermeyer Transport Tech Baselayer Top
$64.5

Endura Men
Endura Men's Baabaa Merino LS Baselayer II Top
$64.95

ExOfficio Men
ExOfficio Men's Sol Cool Sun LS Crew
$64.95

ExOfficio Men
ExOfficio Men's Sol Cool Sun LS Crew
$64.95

ExOfficio Men
ExOfficio Men's Sol Cool Sun LS Crew
$64.95

Icebreaker Men
Icebreaker Men's Anatomica Tank
$64.95

Icebreaker Men
Icebreaker Men's Anatomica Tank
$64.95

Pearl Izumi Men
Pearl Izumi Men's Transfer LS Baselayer Top
$65

Hot Chillys Men
Hot Chillys Men's Micro Elite Chamois 8K Solid Zip-T
On sale - now $65.99 - was $79.95

Gore Wear Men
Gore Wear Men's M Gore Windstopper Base layer Thermo LS Shirt
On sale - now $66.99 - was $89.95

Icebreaker Men
Icebreaker Men's 200 Oasis LS Crewe Top
On sale - now $66.99 - was $89.95

Under Armour Men
Under Armour Men's Base 4.0 Crew Top
On sale - now $66.99 - was $84.95

Arcteryx Men
Arcteryx Men's Phase SL SS Crew
$69

Arcteryx Men
Arcteryx Men's Phase SL SS Crew
$69

Icebreaker Men
Icebreaker Men's Anatomica SS V Neck Top
$69.95

Icebreaker Men
Icebreaker Men's Anatomica SS V Neck Top
$69.95

Rab Men
Rab Men's Merino+ 120 SS Crew
$69.95

Rab Men
Rab Men's Merino+ 120 SS Crew
$69.95

Rab Men
Rab Men's Merino+ 120 SS Crew
$69.95

Maloja Men
Maloja Men's BadilM. Baselayer Short Sleeve Shirt
On sale - now $69.99 - was $108.95

Icebreaker Men
Icebreaker Men's 200 Oasis LS Crewe Top
On sale - now $70.99 - was $89.95

Scott USA Men
Scott USA Men's Defined Mid Pullover
On sale - now $70.99 - was $89.95

Icebreaker Men
Icebreaker Men's 200 Oasis Deluxe Raglan LS Crewe Top
On sale - now $73.99 - was $99.95

Outdoor Research Men
Outdoor Research Men's Alpine Onset Crew
On sale - now $73.99 - was $98.95

Icebreaker Men
Icebreaker Men's Sphere SS Crewe
$74.95

Icebreaker Men
Icebreaker Men's Sphere SS Crewe
$74.95

Icebreaker Men
Icebreaker Men's Sphere SS Crewe
$74.95

Icebreaker Men
Icebreaker Men's Sphere SS Crewe
$74.95

Houdini Men
Houdini Men's Activist Crew
On sale - now $74.99 - was $107.95

Smartwool Men
Smartwool Men's Merino 250 Baselayer Crew
On sale - now $74.99 - was $94.95

Arcteryx Men
Arcteryx Men's Phase SL LS Crew
$75

Marmot Men
Marmot Men's Heavyweight Morph 1/2 Zip Top
$75

Marmot Men
Marmot Men's Midweight Harrier Hoody
$75

Icebreaker Men
Icebreaker Men's 200 Zone LS Crewe Top
On sale - now $75.99 - was $109.95

Icebreaker Men
Icebreaker Men's 150 Zone LS Half Zip Top
On sale - now $78.99 - was $99.95

Arcteryx Men
Arcteryx Men's Phase AR LS Crew
$79

Arcteryx Men
Arcteryx Men's Phase AR LS Crew
$79

Arcteryx Men
Arcteryx Men's Phase AR LS Crew
$79

Icebreaker Men
Icebreaker Men's 150 Zone SS Crewe Top
$79.95

Icebreaker Men
Icebreaker Men's 150 Zone SS Crewe Top
$79.95

Icebreaker Men
Icebreaker Men's 175 Everyday LS Crewe Top
$79.95

Icebreaker Men
Icebreaker Men's 175 Everyday LS Crewe Top
$79.95

Icebreaker Men
Icebreaker Men's 200 Oasis SS Crewe Top
$79.95

Icebreaker Men
Icebreaker Men's 200 Oasis SS Crewe Top
$79.95

Icebreaker Men
Icebreaker Men's 200 Oasis SS Crewe Top
$79.95

Icebreaker Men
Icebreaker Men's 200 Oasis SS Crewe Top
$79.95

Pearl Izumi Men
Pearl Izumi Men's Transfer Wool SS Cycling Baselayer
$79.95

Helly Hansen Men
Helly Hansen Men's HH Merino Light Short Sleeve Polo
$80

Helly Hansen Men
Helly Hansen Men's HH Merino Light Short Sleeve Polo
$80

La Sportiva Men
La Sportiva Men's Ionosphere LS Top
On sale - now $80.99 - was $109

Mons Royale Men
Mons Royale Men's Coreshot Raglan LS Wool Thermal Top
On sale - now $80.99 - was $110

Icebreaker Men
Icebreaker Men's 260 Tech LS Crewe Top
On sale - now $81.99 - was $109.95

Icebreaker Men
Icebreaker Men's 260 Tech LS Crewe Top
On sale - now $81.99 - was $109.95

Icebreaker Men
Icebreaker Men's 260 Tech LS Crewe Top
On sale - now $81.99 - was $109.95

Icebreaker Men
Icebreaker Men's 260 Tech LS Half Zip Top
On sale - now $82.99 - was $119.95

Rab Men
Rab Men's Merino+ 120 LS Crew
$84.95

Rab Men
Rab Men's Merino+ 120 LS Crew
$84.95

Rab Men
Rab Men's Merino+ 120 LS Crew
$84.95

Rab Men
Rab Men's Merino+ 120 LS Crew
$84.95

Smartwool Men
Smartwool Men's Merino 150 Baselayer 1/4 Zip Top
$84.95

Arcteryx Men
Arcteryx Men's Phase SL Zip LS Neck
$85

Smartwool Men
Smartwool Men's Merino 250 Pocket Crew
On sale - now $85.99 - was $114.95

Smartwool Men
Smartwool Men's NTS Mid 250 Zip T
On sale - now $86.99 - was $109.95

Mammut Men
Mammut Men's Klamath LS Top
$88.95

Arcteryx Men
Arcteryx Men's Satoro AR LS Crew
On sale - now $88.99 - was $119

Arcteryx Men
Arcteryx Men's Satoro AR LS Crew
On sale - now $88.99 - was $119

Icebreaker Men
Icebreaker Men's 260 Zone LS Crewe Top
On sale - now $88.99 - was $119.95

La Sportiva Men
La Sportiva Men's Castor LS Top
On sale - now $88.99 - was $119

Arcteryx Men
Arcteryx Men's Phase AR Zip LS Neck
$89

Arcteryx Men
Arcteryx Men's Phase AR Zip LS Neck
$89

Arcteryx Men
Arcteryx Men's Phase AR Zip LS Neck
$89

Icebreaker Men
Icebreaker Men's 150 Zone LS Crewe Top
$89.95

Icebreaker Men
Icebreaker Men's 150 Zone LS Crewe Top
$89.95

Icebreaker Men
Icebreaker Men's 175 Everyday LS Half Zip Top
$89.95

Icebreaker Men
Icebreaker Men's 200 Oasis LS Crewe Top
$89.95

Icebreaker Men
Icebreaker Men's 200 Oasis LS Crewe Top
$89.95

Icebreaker Men
Icebreaker Men's 200 Oasis LS Crewe Top
$89.95

Icebreaker Men
Icebreaker Men's 200 Oasis LS Crewe Top
$89.95

Icebreaker Men
Icebreaker Men's Sphere LS Crewe
$89.95

Icebreaker Men
Icebreaker Men's Sphere LS Crewe
$89.95

Smartwool Men
Smartwool Men's Merino 250 Pocket Crew
On sale - now $90.99 - was $114.95

Smartwool Men
Smartwool Men's Merino 250 Baselayer Crew
$94.95

Smartwool Men
Smartwool Men's Merino 250 Baselayer Crew
$94.95

Smartwool Men
Smartwool Men's Merino 250 Baselayer Crew
$94.95

Smartwool Men
Smartwool Men's Merino 250 Baselayer Crew
$94.95

Arcteryx Men
Arcteryx Men's Satoro AR LS Crew
On sale - now $94.99 - was $119

Outdoor Research Men
Outdoor Research Men's Alpine Onset Zip Top
On sale - now $95.99 - was $128.95

Arcteryx Men
Arcteryx Men's RHO LT Zip Neck Hooded
On sale - now $96.99 - was $139

Gore Wear Men
Gore Wear Men's Thermo Light Shirt
On sale - now $96.99 - was $129.95

Gore Wear Men
Gore Wear Men's Thermo Light Shirt
On sale - now $96.99 - was $129.95

Icebreaker Men
Icebreaker Men's 150 Zone LS Half Zip Top
$99.95

Icebreaker Men
Icebreaker Men's 200 Oasis LS Half Zip Top
$99.95

Icebreaker Men
Icebreaker Men's 200 Oasis LS Half Zip Top
$99.95

Rab Men
Rab Men's Merino+ 120 LS Zip Top
$99.95

Rab Men
Rab Men's Merino+ 120 LS Zip Top
$99.95

Smartwool Men
Smartwool Men's Merino 250 Baselayer Crew
$99.95

Smartwool Men
Smartwool Men's NTS Mid 250 Zip T
$99.95

Smartwool Men
Smartwool Men's NTS Mid 250 Zip T
$99.95

Smartwool Men
Smartwool Men's NTS Mid 250 Zip T
$99.95

Smartwool Men
Smartwool Men's NTS Mid 250 Zip T
$99.95

Arcteryx Men
Arcteryx Men's RHO LT Zip Neck
On sale - now $99.99 - was $125

Smartwool Men
Smartwool Men's Merino 250 Baselayer Hoody
On sale - now $102.99 - was $129.95

Arcteryx Men
Arcteryx Men's RHO LT Zip Neck Hooded
On sale - now $103.99 - was $139

Mammut Men
Mammut Men's Eiger Extreme Moench Advanced ML Half Zip LS Top
On sale - now $103.99 - was $149.95

Smartwool Men
Smartwool Men's Merino 250 Hoody Sport
On sale - now $103.99 - was $149.95

Smartwool Men
Smartwool Men's Merino 250 Baselayer Crew
$104.95

Icebreaker Men
Icebreaker Men's 200 Zone LS Crewe Top
$109.95

Icebreaker Men
Icebreaker Men's 260 Tech LS Crewe Top
$109.95