Underwear & Base Layer

Save big on 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!

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  1. 2-Pk. of Guide Gear® Thermaweave Stretch Base Layer Pants

    3 stars
    (26)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $50.00

    In Stock

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

    4 stars
    (28)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $50.00

    In Stock

  3. Guide Gear® 10-oz. Brown Poly-fleece Bottoms

    4 stars
    (59)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

  4. Under Armour® ColdGear® Infrared EVO Mock Turtleneck

    5 stars
    (16)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  1. Under Armour® ColdGear® Infrared EVO Leggings

    4 stars
    (12)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  2. Men's Guide Gear® Kingsilk Bottoms, Black

    4 stars
    (34)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

  3. Guide Gear® 10-oz. Brown Poly-fleece Crew-neck Top

    5 stars
    (63)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $40.00

    In Stock

  4. 2-Pk. of Indera Mills® Colored Thermal Long John Bottoms

    5 stars
    (17)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $32.00

    In Stock

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

    5 stars
    (51)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $75.00

    In Stock

  2. Men's Guide Gear® Kingsilk Crew Top, Black

    4 stars
    (39)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

  3. 2-Pk. of Indera Mills® Colored Thermal Long John Tops

    4 stars
    (11)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $32.00

    In Stock

  4. Under Armour® Base 3.0™ Leggings

     
    Non-Member $74.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  1. Under Armour® Base 3.0™ Crew

     
    Non-Member $74.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  2. Under Armour® Base 2.0™ Leggings

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

    In Stock

  3. Under Armour® Base 2.0™ Crew

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

    In Stock

  4. 4 Hanes® Flannel Boxers

    4 stars
    (9)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $40.00

    In Stock

  1. 6-Pk. Guide Gear® Boxer Briefs

    5 stars
    (100)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $38.00

    In Stock

  2. 32 Degrees HEAT® Base Layer Bottoms

     
    Buyer's Club $13.49 Non-Member $14.99

    In Stock

  3. 32 Degrees HEAT® Base Layer Crew-neck Top

     
    Buyer's Club $13.49 Non-Member $14.99

    In Stock

  4. 6-Pk. Guide Gear® Pouch Briefs

    5 stars
    (76)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $38.00

    In Stock

  1. Polar King® Thermal Top

     
    Buyer's Club $17.99 Non-Member $19.99

    In Stock

  2. Polar King® Thermal Bottoms

     
    Buyer's Club $17.99 Non-Member $19.99

    In Stock

  3. 32 Degrees HEAT® Heat Fleece Top

     
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

  4. New U.S. Military Surplus Polartec® X-static® Long-sleeved Crew Shirt, Coyote

    5 stars
    (11)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $50.00

    In Stock

  1. 32 Degrees HEAT® Heat Fleece Bottoms

     
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

  2. Carhartt Force® Super Cold Weather Thermal Underwear Shirt, Black

     
    Non-Member $44.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  3. Carhartt Force® Super Cold Weather Thermal Underwear Pants, Black

     
    Non-Member $44.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  4. 6-Pk. of Guide Gear® Pouch Briefs, Camo

    5 stars
    (21)
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

  1. Carhartt® Base Force Midweight Crew Top

     
    Non-Member $34.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  2. Carhartt® Base Force Midweight Bottoms

     
    Non-Member $34.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  3. Carhartt® Irregular Base Force® Super PT Top

     
    Buyer's Club $17.99 Non-Member $19.99 Compare at $44.99

    In Stock

  4. Clam™ Ice Armor™ Base Layer Fleece Top

    4 stars
    (3)
    Buyer's Club $29.69 Non-Member $32.99

    In Stock

  1. Clam™ Ice Armor™ Base Layer Fleece Bottom

    5 stars
    (5)
    Buyer's Club $29.69 Non-Member $32.99

    In Stock

  2. Men's WSI® Arctic Microtech Long-sleeve Cold Weather Performance Shirt

    5 stars
    (2)
    Buyer's Club $35.99 Non-Member $39.99 Compare at $45.99

    In Stock

  3. Men's WSI® Microtech Loose Long-sleeve Shirt, Black

    4 stars
    (5)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $25.99

    In Stock

  4. Men's WSI® WikMax HEATR® Pants, Black

     
    Buyer's Club $116.99 Non-Member $129.99 Compare at $139.99

    In Stock

  1. Men's WSI® Microtech Fitted Long-sleeve Shirt

    3 stars
    (6)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $21.99

    In Stock

  2. WSI® Arctic HEATR® Vent Shirt, Black

     
    Buyer's Club $71.99 Non-Member $79.99 Compare at $89.99

    In Stock

  3. Men's WSI® Compression Shorts

    2 stars
    (2)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $27.99

    In Stock

  4. Men's WSI® Microtech Zipper Polo, Black

    3 stars
    (1)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $35.99

    In Stock

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

     
    Buyer's Club $17.99 Non-Member $19.99 Compare at $21.99

    In Stock

  2. Men's WSI® Microtech Fitted Sleeveless Shirt

    4 stars
    (4)
    Buyer's Club $13.49 Non-Member $14.99 Compare at $17.99

    In Stock

  3. WSI® WikMax HEATR® 1/4-zip Top

     
    Buyer's Club $116.99 Non-Member $129.99 Compare at $139.99

    In Stock

  4. Clam™ Ice Armor Merino Wool Blend Base Layer Bottom

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

    Item is currently on backorder

  1. Rock Face® 2-layer Thermal Shirt from Rock Face®

    4 stars
    (2)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $27.00

    In Stock

  2. Carhartt® Heavyweight Cotton Thermal Long Underwear Bottoms

    5 stars
    (3)
    Non-Member $29.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  3. Rock Face® 2-layer Thermal Pants from Rock Face®

    3 stars
    (2)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $27.00

    In Stock

  4. Carhartt® Heavyweight Crewneck Shirt

    5 stars
    (1)
    Non-Member $29.99 Buyer's Club Discount Applied at Checkout!

    In Stock

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