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!

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  1. 6-Pk. Guide Gear Boxer Briefs

    5 stars
    (112)
    Compare at $38.00 Was $29.99 Non-Member $24.99 Buyer's Club $22.49

    You Save $15.51 (41%)

  2. 6-Pk. Guide Gear Pouch Briefs

    5 stars
    (90)
    Compare at $38.00 Was $24.99 Non-Member $19.99 Buyer's Club $17.99

    You Save $20.01 (53%)

  3. Guide Gear Performance T-shirt

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

    You Save $11.51 (46%)

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

    5 stars
    (41)
    Compare at $57.00 Was $34.99 Non-Member $29.99 Buyer's Club $26.99

    You Save $30.01 (53%)

  1. 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%)

  2. Polar King Thermal Top

    3 stars
    (5)
    Clearance $19.99
  3. 32 Degrees HEAT Base Layer Bottoms

    4 stars
    (16)
    Non-Member $19.99 Buyer's Club $17.99
  4. 32 Degrees HEAT Base Layer Crew-neck Top

    5 stars
    (14)
    Non-Member $19.99 Buyer's Club $17.99
  1. Polar King Thermal Bottoms

    3 stars
    (5)
    Clearance $19.99
  2. 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%)

  3. 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%)

  4. 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%)

  1. 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%)

  2. 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%)

  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. Under Armour ColdGear Infrared EVO Mock Turtleneck

    5 stars
    (21)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!
  1. Under Armour ColdGear Infrared EVO Leggings

    4 stars
    (17)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!
  2. Terramar Thermolator Leggings

     
    Non-Member $19.99 Buyer's Club $17.99
  3. 32 Degrees HEAT Heat Fleece Top

    5 stars
    (2)
    Clearance $14.99
  4. Carhartt Base Force Midweight Crew Top

     
    Non-Member $34.99 Buyer's Club $31.49
  1. 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%)

  2. 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%)

  3. Carhartt Base Force Midweight Bottoms

     
    Non-Member $34.99 Buyer's Club $31.49
  4. 32 Degrees HEAT Heat Fleece Bottoms

    4 stars
    (7)
    Clearance $19.99
  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. Terramar Thermolator 1/2-zip Top

    5 stars
    (1)
    Non-Member $19.99 Buyer's Club $17.99
  3. Outdoor Research Sequence Leggings

     
    Non-Member $49.99 Buyer's Club Discount Applied at Checkout!
  4. 2-Pk. of Guide Gear® Thermaweave Stretch Base Layer Pants

    3 stars
    (32)
    Compare at $50.00 Was $29.99 Clearance $19.99

    You Save $30.01 (60%)

  1. 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

  2. Outdoor Research Sequence Long-sleeved Crew

     
    Non-Member $49.99 Buyer's Club Discount Applied at Checkout!
  3. Under Armour Base 2.0 Crew

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

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

    5 stars
    (1)
    Non-Member $44.99 Buyer's Club $40.49
  2. 4 Hanes Flannel Boxers

    4 stars
    (18)
    Compare at $40.00 Was $24.99 Clearance $14.99

    You Save $25.01 (63%)

  3. Under Armour® Base 3.0™ Crew

    5 stars
    (1)
    Non-Member $74.99 Buyer's Club Discount Applied at Checkout!
  4. 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

  1. 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%)

    Item is currently on backorder

  2. Carhartt® Irregular Base Force® Super Cold Weather Bottoms

    4 stars
    (2)
    Non-Member $34.99 Buyer's Club $31.49

    Item is currently on backorder

  3. Men's WSI® Arctic WikMax™ Pants, Black

    5 stars
    (1)
    Compare at $59.99 Non-Member $49.99 Buyer's Club $44.99

    You Save $15.00 (25%)

  4. WSI® Microtech Neon Green Fitted Long-sleeved Shirt

    3 stars
    (1)
    Non-Member $24.99 Buyer's Club $22.49
  1. Carhartt® Heavyweight Crewneck Shirt

    5 stars
    (3)
    Non-Member $29.99 Buyer's Club Discount Applied at Checkout!
  2. Carhartt® Heavyweight Cotton Thermal Long Underwear Bottoms

    5 stars
    (6)
    Non-Member $29.99 Buyer's Club Discount Applied at Checkout!
  3. Carhartt® Base Force™ Cold Weather Weight Long Underwear Bottoms, Black

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

     
    Non-Member $44.99 Buyer's Club Discount Applied at Checkout!
  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® Base Force™ Cool Weather Weight Crewneck Shirt, Black

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

     
    Non-Member $39.99 Buyer's Club Discount Applied at Checkout!
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