Underwear & Base Layer

Save big on Men's Underwear at Sportsman's Guide. Every guy could use a couple new pairs of Boxers or Briefs and at Sportsman's Guide you can also choose from Thermal Long Underwear, Compression Shorts, Base Layers, Long Johns to name just a few. These Long Johns and Underwear are great for Outdoors activities. We carry many of your favorite brands like Guide Gear, WSI, Carhartt and more! Shop all Underwear and enjoy the lowest prices, guaranteed!

Grid List
Sort By:
1-47 of 47
Show:
Pages:
  1. 1
1
  1. 6-Pk. Guide Gear Boxer Briefs

    5 stars
    (117)
    Compare at $38.00 Was $29.99 Non-Member $24.99 Buyer's Club $22.49

    You Save $15.51 (41%)

  2. Guide Gear Performance T-shirt

     
    Compare at $25.00 Non-Member $14.99 Buyer's Club $13.49

    You Save $11.51 (46%)

  3. 6-Pk. Guide Gear Pouch Briefs

    5 stars
    (91)
    Compare at $38.00 Was $24.99 Non-Member $19.99 Buyer's Club $17.99

    You Save $20.01 (53%)

  4. 6-Pk. of Guide Gear Camp Base Boxer Briefs, Camo

    5 stars
    (42)
    Compare at $57.00 Was $34.99 Non-Member $29.99 Buyer's Club $26.99

    You Save $30.01 (53%)

  1. Under Armour ColdGear Infrared EVO Mock Turtleneck

    5 stars
    (21)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!
  2. Guide Gear 10-oz. Brown Poly-fleece Crew-neck Top

    5 stars
    (72)
    Compare at $40.00 Was $24.99 Non-Member $19.99 Buyer's Club $17.99

    You Save $22.01 (55%)

  3. 6-Pk. of Guide Gear Pouch Briefs, Camo

    5 stars
    (23)
    Compare at $42.00 Was $29.99 Non-Member $24.99 Buyer's Club $22.49

    You Save $19.51 (46%)

  4. 32 Degrees HEAT Base Layer Bottoms

    4 stars
    (16)
    Clearance $19.99
  1. Guide Gear 10-oz. Brown Poly-fleece Bottoms

    5 stars
    (69)
    Compare at $40.00 Was $39.99 Non-Member $19.99 Buyer's Club $17.99

    You Save $22.01 (55%)

  2. 32 Degrees HEAT Base Layer Crew-neck Top

    5 stars
    (14)
    Clearance $19.99
  3. Under Armour ColdGear Infrared EVO Leggings

    4 stars
    (17)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!
  4. Polar King Thermal Top

    3 stars
    (5)
    Was $24.99 Clearance $9.99
  1. 2-Pk. of Indera Mills Colored Thermal Long John Bottoms

    4 stars
    (28)
    Compare at $32.00 Was $24.99 Clearance $14.99

    You Save $17.01 (53%)

  2. 32 Degrees HEAT Heat Fleece Top

    5 stars
    (2)
    Was $24.99 Clearance $14.99
  3. 2-Pk. of Indera Mills Colored Thermal Long John Tops

    4 stars
    (21)
    Compare at $32.00 Was $24.99 Clearance $14.99

    You Save $17.01 (53%)

  4. 2-Pk. of Guide Gear® Thermaweave Stretch Base Layer Pants

    3 stars
    (32)
    Was $29.99 Clearance $14.99
  1. Under Armour® Base 2.0™ Leggings

    4 stars
    (5)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    Item is currently on backorder

  2. Carhartt Base Force Midweight Bottoms

     
    Non-Member $34.99 Buyer's Club $31.49
  3. Carhartt Irregular Base Force Cold Weather Crew Neck Shirt, Black

     
    Was $24.99 Non-Member $19.99 Buyer's Club $17.99
  4. 32 Degrees HEAT Heat Fleece Bottoms

    4 stars
    (7)
    Was $24.99 Clearance $19.99
  1. Carhartt Irregular Base Force Super PT Bottoms

    4 stars
    (2)
    Compare at $44.99 Was $24.99 Non-Member $19.99 Buyer's Club $17.99

    You Save $27.00 (60%)

  2. Polar King Thermal Bottoms

    4 stars
    (6)
    Was $24.99 Clearance $9.99
  3. Men's Guide Gear Silk Base Layer Bottom, Black

    4 stars
    (54)
    Compare at $40.00 Was $34.99 Non-Member $29.99 Buyer's Club $26.99

    You Save $13.01 (33%)

  4. Terramar Thermolator Leggings

     
    Was $29.99 Non-Member $19.99 Buyer's Club $17.99
  1. Under Armour Base 2.0 Crew

    5 stars
    (4)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!
  2. Carhartt Force Super Cold Weather Thermal Underwear Shirt, Black

    5 stars
    (1)
    Non-Member $44.99 Buyer's Club $40.49
  3. Carhartt Force Super Cold Weather Thermal Underwear Pants, Black

    5 stars
    (1)
    Non-Member $44.99 Buyer's Club $40.49
  4. Men's Guide Gear Silk Base Layer Crewneck, Black

    4 stars
    (47)
    Compare at $40.00 Was $34.99 Non-Member $29.99 Buyer's Club $26.99

    You Save $13.01 (33%)

  1. Carhartt Base Force Midweight Crew Top

     
    Non-Member $34.99 Buyer's Club $31.49
  2. Terramar Thermolator 1/2-zip Top

    5 stars
    (2)
    Was $29.99 Non-Member $19.99 Buyer's Club $17.99
  3. Outdoor Research Sequence Long-sleeved Crew

     
    Non-Member $59.99 Buyer's Club Discount Applied at Checkout!
  4. 4 Hanes Flannel Boxers

    4 stars
    (18)
    Was $24.99 Clearance $11.99
  1. 2-Pk. of Guide Gear® Thermaweave Stretch Base Layer Tops

    4 stars
    (33)
    Compare at $50.00 Non-Member $29.99 Buyer's Club $26.99

    You Save $23.01 (46%)

  2. Carhartt® Irregular Base Force® Super PT Top

     
    Compare at $44.99 Was $29.99 Non-Member $24.99 Buyer's Club $22.49

    You Save $22.50 (50%)

  3. Outdoor Research Sequence Leggings

     
    Non-Member $59.99 Buyer's Club Discount Applied at Checkout!
  4. Under Armour® Base 3.0™ Leggings

    5 stars
    (1)
    Non-Member $74.99 Buyer's Club Discount Applied at Checkout!

    Item is currently on backorder

  1. Guide Gear® 10-oz. Poly-fleece Union Suit, Brown

    5 stars
    (71)
    Compare at $75.00 Was $34.99 Non-Member $29.99 Buyer's Club $26.99

    You Save $48.01 (64%)

  2. Carhartt Irregular Work Camo Thermal Jacket, Realtree AP Xtra

     
    Was $89.99 Non-Member $79.99 Buyer's Club $71.99
  3. Under Armour® Base 3.0™ Crew

    5 stars
    (1)
    Non-Member $74.99 Buyer's Club Discount Applied at Checkout!
  4. Carhartt® Irregular Base Force® Super Cold Weather Bottoms

    4 stars
    (2)
    Non-Member $34.99 Buyer's Club $31.49
  1. Carhartt® Base Force™ Cool Weather Weight Long Underwear Bottoms, Black

    5 stars
    (1)
    Non-Member $34.99 Buyer's Club Discount Applied at Checkout!
  2. Carhartt® Midweight Cotton Union Suit, Red

     
    Non-Member $39.99 Buyer's Club Discount Applied at Checkout!
  3. Carhartt® Base Force™ Cold Weather Weight Crewneck Shirt, Black

     
    Non-Member $44.99 Buyer's Club Discount Applied at Checkout!
  4. Carhartt® Base Force™ Cold Weather Weight Long Underwear Bottoms, Black

     
    Non-Member $44.99 Buyer's Club Discount Applied at Checkout!
  1. Carhartt® Heavyweight Crewneck Shirt

    5 stars
    (4)
    Non-Member $29.99 Buyer's Club Discount Applied at Checkout!
  2. Carhartt® Base Force™ Cool Weather Weight Crewneck Shirt, Black

    5 stars
    (1)
    Non-Member $34.99 Buyer's Club Discount Applied at Checkout!
  3. Carhartt® Heavyweight Cotton Thermal Long Underwear Bottoms

    5 stars
    (6)
    Non-Member $29.99 Buyer's Club Discount Applied at Checkout!
1-47 of 47
Show:
Pages:
  1. 1
1

Related Products

Scent Blocker® Super Skin™ Base Layer Pants

Item # WX2-227050

  • Info

    Why are all sizes not listed? We only display sizes that are currently available for you to order.

Starting at...
Non-Member $39.99 Buyer's Club $35.99

Add to Wishlist

Scent Blocker® Super SkinTM Base Layer Pants. Hunt hard, stay warm.

Best of both worlds... blended Merino wool and polyester. Provides a super-effective temperature-controlling, moisture-wicking, quick-drying layer. S3® Advanced antimicrobial technology inhibits odor-causing bacteria. Form-fitting, easy-moving comfort in all sorts of conditions!

Merino blend material also makes for a durable garment that resists shrinking. Flat seams prevent chafing. Pants: Elastic comfort-fit waistband, boxer-style front fly. Imported.

State Color and Size, as available in the Shopping Cart. 

5.11 Tactical® Sports Boxer Brief

Item # WX2-230308

3 stars
(2)
  • Info

    Why are all sizes not listed? We only display sizes that are currently available for you to order.

Non-Member $24.99 Buyer's Club Discount Applied at Checkout!

Add to Wishlist

5.11 Tactical® 9" Sports Boxer Brief Underwear Underwear that will stretch and move with you, for comfort while you run, bend, walk, or jog!

You'll say goodbye to your tighty-whities once you give these Sport Boxer Brief Underwear a try. Mens underwear made with a polyester / spandex blend, our briefs have great breathability and are comfortable and quick-drying. 5.11's Sport Boxer Brief Mens Underwear are the only briefs with moisture-moving 3D-Wicking technology. Machine wash / dry underwear. Imported.

State Size and Color, as available in the Shopping Cart.

Under Armour ColdGear Infrared EVO Mock Turtleneck

Item # WX2-282770

5 stars
(21)
  • Info

    Why are all sizes not listed? We only display sizes that are currently available for you to order.

Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

Add to Wishlist

Under Armour® ColdGear® Infrared EVO Mock Turtleneck. Stay warm, dry and focused in the field.

A flexible ceramic coating on the inside of both garments holds heat instead of dispersing it, keeping you in the field longer! Ideal for mild to cool hunts, or for cold hunts where you're really exerting yourself and working up a sweat, to wick moisture away from your skin. Plus, 4-way stretch 87/13 polyester / elastane-blend material allows full range of motion, prevents muscle fatigue.

  • Dual-layer fabric for ultra-warm interior, quick-drying exterior
  • ColdGear Infrared printed interior traps heat for superior warmth without weight
  • Anti-odor technology
  • Smooth, chafe-free flatlock seam
  • Machine wash / hang dry. Imported.

State Color and Size, as available in the Shopping Cart.

Under Armour Camo Boxer Jock

Item # WX2-619655

  • Info

    Why are all sizes not listed? We only display sizes that are currently available for you to order.

Non-Member $29.99 Buyer's Club Discount Applied at Checkout!

Add to Wishlist

Under Armour® Camo Boxer Jock. Comfort to your core!

So much more than underwear! This Boxer Jock has moisture-wicking and HeatGear® fabric to keep you cool and fresh when things heat up in the field. Plus, they stretch, recover and, best of all, stay put... for a comfortable fit you won't even think twice about. This Boxer Jock is the perfect way to complete your hunting outfit, or wear to during workouts and to the gym!

Lightweight Boxer:

  • 4-way stretch 4.7-oz. polyester / elastane fabric
  • Moisture Transport System makes 'em dry quickly
  • HeatGear technology keeps you cool
  • Microbial treatment prevents odor-growing microbes
  • Fits next to skin, without the squeeze
  • Working fly
  • 6" inseam
  • Performance waistband
  • Machine wash / dry
  • Imported.

State Color and Size, as available in the Shopping Cart.

Join or Renew The Sportsman’s Guide Buyer’s Club® Today!

$29.99 per year   • Save up to 10% on purchases every day.
Join Renew More Info