Underwear & Base Layer

Stay warm and dry this season with Hunting Underwear from Sportsman's Guide. Shop for Long Johns, Base Layers, Thermal Underwear for hunting and your other outdoor activities. Shop The Guide's selection for unbeatable deals from top brands such as Guide Gear, Carhartt, WSI, 5.11 Tactical, Under Armour and many more and save BIG!

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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. 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

  1. 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

  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. Under Armour® Base 3.0™ Crew

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

    In Stock

  4. Under Armour® Base 3.0™ Leggings

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

    In Stock

  1. 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

  2. Men's Under Armour® ColdGear® EVO Base Layer Leggings

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

    In Stock

  3. Under Armour® Treestand Base Bottoms, Black

     
    Non-Member $79.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  4. Under Armour® Treestand Base Top, Black

     
    Non-Member $79.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  1. Under Armour® Base 2.0™ Leggings

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

    In Stock

  2. Under Armour® Base 2.0™ Crew

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

    In Stock

  3. 6-Pk. Guide Gear® Boxer Briefs

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

    In Stock

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

    5 stars
    (25)
    Buyer's Club $8.99 Non-Member $9.99 Compare at $25.00

    In Stock

  1. Browning® Hell's Canyon Midweight Base Layer Top, Realtree Xtra® Camo

     
    Buyer's Club $44.99 Non-Member $49.99 Compare at $66.00

    In Stock

  2. 6-Pk. Guide Gear® Pouch Briefs

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

    In Stock

  3. Guide Gear® Kingsilk Balaclava, Black

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

    In Stock

  4. Polar King® Thermal Top

     
    Buyer's Club $17.99 Non-Member $19.99

    In Stock

  1. 32 Degrees HEAT® Base Layer Bottoms

     
    Buyer's Club $13.49 Non-Member $14.99

    In Stock

  2. Browning® Hell's Canyon Midweight Base Layer Pants, Realtree Xtra® Camo

     
    Buyer's Club $35.99 Non-Member $39.99

    In Stock

  3. Polar King® Thermal Bottoms

     
    Buyer's Club $17.99 Non-Member $19.99

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

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

    In Stock

  2. 32 Degrees HEAT® Base Layer Crew-neck Top

     
    Buyer's Club $13.49 Non-Member $14.99

    In Stock

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

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

    In Stock

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

    5 stars
    (18)
    Clearance $9.99

    In Stock

  1. 32 Degrees HEAT® Heat Fleece Top

     
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

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

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

    In Stock

  3. 32 Degrees HEAT® Heat Fleece Bottoms

     
    Buyer's Club $22.49 Non-Member $24.99

    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® Irregular Base Force® Super Cold Weather Bottoms

     
    Buyer's Club $22.49 Non-Member $24.99

    In Stock

  2. 4 Hanes® Flannel Boxers

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

    In Stock

  1. Carhartt® Base Force Midweight Crew Top

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

    In Stock

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

    4 stars
    (10)
    Clearance $14.99 Compare at $38.00

    In Stock

  3. Carhartt® Base Force Midweight Bottoms

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

    In Stock

  4. Carhartt® Irregular Base Force® Super PT Top

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

    In Stock

  1. ScentBlocker® S3® Midweight Wool Shirt, Black / Gray

     
    Clearance $69.99

    In Stock

  2. Clam™ Ice Armor™ Base Layer Fleece Bottom

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

    Item is currently on backorder

  3. Clam™ Ice Armor™ Base Layer Fleece Top

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

    Item is currently on backorder

  4. ScentBlocker® S3® Midweight Wool Pants, Black / Gray

     
    Clearance $59.99

    In Stock

1-48 of 95
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Related Products

Men's Guide Gear® Kingsilk Bottoms, Black

Item # WX2-208077

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

Add to Wishlist

Guide Gear® Kingsilk Base Layers, 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. Order Now!

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

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

Item # WX2-52812

5 stars
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Buyer's Club $17.99 Non-Member $19.99

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Guide Gear® 10-oz. Poly-Fleece Underwear.

Bitter coldness is exactly why we developed this Guide Gear® Poly-Fleece Underwear. And our factory-direct pricing makes it the best value. In fact, we started with the U.S. Military's original E.C.W.C.S. Thermal Underwear and improved the fit and fabric for civilian-approved comfort.

This amazing 10-oz. polyester fabric insulates incredibly AND it's hydrophobic ("water hating") to suck moisture off your skin when you work up a sweat. Even better, this fabric does NOT retain odor. Brushed-fleece finish inside.

  • Crewneck has cuffs with stretch Lycra®
  • Machine wash / dry. Imported.

State Size, as available in the Shopping Cart. 

Please Note: This item may be Kenyon or Guide Gear brand. Sorry, no choice.

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

Clam™ Ice Armor Merino Wool Blend Base Layer Bottom

Item # WX2-229840

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

Add to Wishlist

ClamTM Ice Armor Merino Wool Blend Base Layer Bottom. Warm, comfortable, moisture-wicking performance for your "better half"!

Mixing the right combination of fabrics to get the perfect blend of warmth, comfort and moisture-wicking in a Base Layer is a thing of beauty. Clam™'s done it again... they've taken Merino wool - the "Cadillac" of wools - and added in silver nylon to make the ultimate Base Layer Bottom!

The warm-up:
  • Made from 50/50 merino wool / polyester for the best in warm, comfortable, moisture-wicking performance
  • Ribbed ankle cuffs for added warmth and a better fit
  • Anti-microbial technology helps control odors
  • Front fly. Hand wash cold water, hang dry. Imported.

State Size, as available in the Shopping Cart.

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

Item # WX2-223857

4 stars
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 / dry. Imported.

State Color and Size, as available in the Shopping Cart below. Order now and start your next adventure off right!

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

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