Underwear & Base Layer

Save big on Underwear at Sportsman's Guide. Every guy could use a couple new pairs of Boxers or Briefs in their life; but we have more to offer like Thermals, Long Underwear, Compression Shorts, Scent Proof Base Layers, Long Johns, and more.

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  1. Under Armour® ColdGear® Infrared EVO Leggings

    4 stars
    (11)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  2. Under Armour® ColdGear® Infrared EVO Mock Turtleneck

    5 stars
    (15)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  3. 2-Pk. of Guide Gear® Thermaweave Stretch Base Layer Pants

    3 stars
    (25)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $50.00

    In Stock

  4. 6 - Pk. Guide Gear® Boxer Briefs

    5 stars
    (93)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $38.00

    In Stock

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

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

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

    4 stars
    (38)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

  4. New U.S. Military Surplus Polartec® X-static® Crew T-shirt, Coyote

    5 stars
    (2)
    Clearance $9.99

    In Stock

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

    4 stars
    (59)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $40.00

    In Stock

  2. 6 - Pk. Guide Gear® Pouch Briefs

    5 stars
    (72)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $38.00

    In Stock

  3. 6-Pk. of Guide Gear® Camp Base Boxer Briefs, Camo

    5 stars
    (36)
    Buyer's Club $26.99 Non-Member $29.99

    In Stock

  4. 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

  1. 6 - Pk. of Guide Gear® Pouch Briefs, Camo

    5 stars
    (20)
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

  2. 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

  3. 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. Guide Gear® Kingsilk Balaclava, Black

    4 stars
    (9)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $30.00

    In Stock

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

    5 stars
    (48)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $75.00

    In Stock

  3. Men's 32 Degrees Heat by Weatherproof® Performance Base-layer Bottoms

    5 stars
    (17)
    Clearance $9.99

    In Stock

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

    5 stars
    (25)
    Buyer's Club $8.99 Non-Member $9.99

    In Stock

  2. 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

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

     
    Buyer's Club $40.49 Non-Member $44.99

    In Stock

  2. Clam™ Ice Armor™ Base Layer Fleece Top

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

    Item is currently on backorder

  3. Clam™ Ice Armor™ Base Layer Fleece Bottom

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

    Item is currently on backorder

  4. 4 Hanes® Flannel Boxers

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

    In Stock

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

     
    Buyer's Club $40.49 Non-Member $44.99

    In Stock

  2. Indera® 2-layer Performance Thermal Bottoms, Gray

    4 stars
    (10)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $38.00

    In Stock

  3. Indera® 2-layer Performance Thermal Top, Gray

    5 stars
    (8)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $38.00

    In Stock

  1. 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

  2. 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

  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 Fitted Long-sleeve Shirt

    3 stars
    (5)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $21.99

    In Stock

  1. ScentShied® S3® Expedition-weight Wool Pants

    5 stars
    (1)
    Buyer's Club $53.99 Non-Member $59.99 Compare at $74.99

    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. ScentShield® S3® Mid-weight Wool Shirt

    4 stars
    (1)
    Buyer's Club $71.99 Non-Member $79.99 Compare at $94.99

    In Stock

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

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

    In Stock

  1. 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

  2. WSI® WikMax HEATR® 1/4-zip Top

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

    In Stock

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

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

    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. 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

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

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

    In Stock

  3. ScentShield® S3® Mid-weight Wool Pants

     
    Buyer's Club $62.99 Non-Member $69.99 Compare at $84.99

    In Stock

  4. 2-Pk. Hanes® Boxer Shorts

     
    Buyer's Club $13.49 Non-Member $14.99 Compare at $20.00

    In Stock

1-48 of 74
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These long johns and underwear are great for Outdoors activities. We carry many of your favorite brands like Under Armour, Guide Gear, WSI, and 5.11 Tactical.

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