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

    5 stars
    (62)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $75.00

    In Stock

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

    4 stars
    (64)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

  3. Men's Guide Gear® Bottoms, Black

    4 stars
    (43)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

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

    4 stars
    (43)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

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

    4 stars
    (33)
    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 Pants

    3 stars
    (29)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $50.00

    In Stock

  3. 32 Degrees HEAT® Heat Fleece Top

    5 stars
    (1)
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

  4. 4 Hanes® Flannel Boxers

    4 stars
    (17)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $40.00

    In Stock

  1. 32 Degrees HEAT® Heat Fleece Bottoms

    4 stars
    (2)
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

  2. 6-Pk. Guide Gear® Boxer Briefs

    5 stars
    (102)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $38.00

    In Stock

  3. Terramar® Thermolator Leggings

     
    Buyer's Club $26.99 Non-Member $29.99

    In Stock

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

     
    Buyer's Club $40.49 Non-Member $44.99

    In Stock

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

     
    Buyer's Club $40.49 Non-Member $44.99

    In Stock

  2. Carhartt® Base Force Midweight Crew Top

     
    Buyer's Club $31.49 Non-Member $34.99

    In Stock

  3. Carhartt® Base Force Midweight Bottoms

     
    Buyer's Club $31.49 Non-Member $34.99

    In Stock

  4. Terramar® Thermolator 1/2-zip Top

     
    Buyer's Club $26.99 Non-Member $29.99

    In Stock

  1. 6-Pk. of Guide Gear® Camp Base Boxer Briefs, Camo

    5 stars
    (39)
    Buyer's Club $26.99 Non-Member $29.99

    In Stock

  2. 6-Pk. of Guide Gear® Pouch Briefs, Camo

    5 stars
    (23)
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

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

    4 stars
    (2)
    Buyer's Club $22.49 Non-Member $24.99

    Item is currently on backorder

  4. 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

  1. 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

  2. Men's WSI® Compression Shorts

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

    In Stock

  3. 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

  4. Carhartt® Heavyweight Cotton Thermal Long Underwear Bottoms

    5 stars
    (4)
    Non-Member $29.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  1. Carhartt® Heavyweight Crewneck Shirt

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

    In Stock

  2. Carhartt® Base Force™ Cold Weather Weight Long Underwear Bottoms, Black

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

    In Stock

  3. Carhartt® Base Force™ Cold Weather Weight Crewneck Shirt, Black

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

    In Stock

  4. Carhartt® Base Force™ Cool Weather Weight Crewneck Shirt, Black

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

    In Stock

  1. Carhartt® Base Force™ Cool Weather Weight Long Underwear Bottoms, Black

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

    In Stock

  2. Carhartt® Midweight Cotton Union Suit, Red

     
    Non-Member $36.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  3. BLACKHAWK!® Engineered-Fit 1/4-zip Short Sleeve Shirt

     
    Buyer's Club $40.49 Non-Member $44.99 Compare at $49.99

    In Stock

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Related Products

3 New Dutch Military Surplus Fleece Long Underwear Bottoms

Item # WX2-590736

  • Info

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

Buyer's Club $17.99 Non-Member $19.99

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3-Pk. of New Dutch Military Surplus Fleece Long Underwear.

Hey, Chilly Willy! When it's c-c-cold out, make sure you deploy an extra layer with these Bottoms to ward off Jack Frost "offensives."

  • Cotton-blend material
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Condition: brand new, never issued. State Size, as available in the Shopping Cart. Recruit yours today!

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Men's Guide Gear Bottoms, Black

Item # WX2-208077

4 stars
  • Info

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

Starting at...
Buyer's Club $26.99 Non-Member $29.99

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Guide Gear® Bottoms, BIG BUCKS OFF!

Ounce for ounce, silk is the warmest fabric there is. Naturally moisture wicking, dry and comfortable. Smooth surface won't catch or cling to clothing. Bottoms have an elastic waistband. Imported. Machine wash / hang dry.

State Size, as available in the Shopping Cart.

Built to Sportsman's Guide's exact specifications, Guide Gear® stands for dependability, long-lasting quality and unmatched value! Guaranteed!

Carhartt® Heavyweight Cotton Thermal Long Underwear Bottoms

Item # WX2-427601

5 stars
  • Info

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

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

Add to Wishlist

Carhartt® Heavyweight Cotton Thermal Long Underwear Bottoms are up on warmth and comfort.

A base layer to wear under, on those days when jeans, khakis or work pants aren't enough to keep cold away. Made of 9.5-oz., moisture-wicking 100% ringspun cotton knit for softness and toastiness. Reinforced stitching on all seams means these wear long. Ribknit cuffs seal out chill. Elastic waist with Carhartt® logo. Machine wash / dry. Imported.

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

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

Item # WX2-223857

4 stars
  • Info

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

Buyer's Club $26.99 Non-Member $29.99 Compare at $50.00

Add to Wishlist

2-Pk. of Guide Gear® Thermaweave Stretch Base Layers form the perfect foundation of protection! SAVE BIG!

Every great trek begins with a solid foundation. Got some adventure on your to-do list? Guide Gear® Thermaweave Base Layer Gear is a great place to start. It's cool, comfortable and helps pull moisture away from the skin, preventing chafing and discomfort.

Flexible stretch fabric moves with you, ensuring that you'll never suffer creases or bunching. Get yours here and you'll be ready for any outdoor escapade!

Back to base:

  • 94/6 cotton / spandex blend
  • Crew-neck collar
  • Stretch-to-fit cuffs and comfort
  • Flat-seam stitching
  • Straight hem. Machine wash / lay flat to dry. Imported.

State Color and Size, as available in the Shopping Cart. Please order one size larger for a more comfortable fit.

Built to Sportsman's Guide's exact specifications, Guide Gear stands for dependability, long-lasting quality and unmatched value!  Guaranteed!

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