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!

Grid List
Sort By:
1-48 of 49
Show:
Pages:
  1. 1
  2. 2
2
  1. 32 Degrees HEAT Base Layer Bottoms

    4 stars
    (16)
    Buyer's Club $13.49 Non-Member $14.99

    In Stock

  2. 32 Degrees HEAT Base Layer Crew-neck Top

    5 stars
    (13)
    Buyer's Club $13.49 Non-Member $14.99

    In Stock

  3. Polar King Thermal Top

    3 stars
    (5)
    Buyer's Club $13.49 Non-Member $14.99

    In Stock

  4. Under Armour ColdGear Infrared EVO Mock Turtleneck

    5 stars
    (21)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    In Stock

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

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

    In Stock

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

    4 stars
    (67)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $40.00

    In Stock

  3. Men's Guide Gear Silk Base Layer Bottom, Black

    4 stars
    (51)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

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

    5 stars
    (72)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $40.00

    In Stock

  1. Under Armour ColdGear Infrared EVO Leggings

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

    In Stock

  2. Men's Guide Gear Silk Base Layer Crewneck, Black

    4 stars
    (47)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

  3. Under Armour Base 2.0 Crew

    5 stars
    (3)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    In Stock

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

    5 stars
    (23)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $42.00

    In Stock

  1. 6-Pk. Guide Gear® Boxer Briefs

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

    In Stock

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

    5 stars
    (69)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $75.00

    In Stock

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

    4 stars
    (28)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $32.00

    In Stock

  4. 6-Pk. Guide Gear Pouch Briefs

    5 stars
    (89)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $38.00

    In Stock

  1. 2-Pk. of Indera Mills Colored Thermal Long John Tops

    4 stars
    (21)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $32.00

    In Stock

  2. Guide Gear Performance T-shirt

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

    In Stock

  3. Under Armour® Base 3.0™ Crew

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

    In Stock

  4. 32 Degrees HEAT Heat Fleece Bottoms

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

    In Stock

  1. 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

  2. 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

  3. 32 Degrees HEAT Heat Fleece Top

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

    In Stock

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

    5 stars
    (1)
    Buyer's Club $40.49 Non-Member $44.99

    In Stock

  1. Terramar Thermolator 1/2-zip Top

    5 stars
    (1)
    Buyer's Club $17.99 Non-Member $19.99

    In Stock

  2. 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

  3. Carhartt Base Force Midweight Crew Top

     
    Buyer's Club $31.49 Non-Member $34.99

    In Stock

  4. Carhartt Base Force Midweight Bottoms

     
    Buyer's Club $31.49 Non-Member $34.99

    In Stock

  1. Terramar Thermolator Leggings

     
    Buyer's Club $17.99 Non-Member $19.99

    In Stock

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

    5 stars
    (1)
    Buyer's Club $40.49 Non-Member $44.99

    In Stock

  3. Outdoor Research Sequence Leggings

     
    Non-Member $59.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  4. Outdoor Research Sequence Long-sleeved Crew

     
    Non-Member $59.99 Buyer's Club Discount Applied at Checkout!

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

    4 stars
    (6)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $25.99

    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. WSI® Microtech Neon Green Fitted Long-sleeved Shirt

    3 stars
    (1)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $21.99

    In Stock

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

    5 stars
    (4)
    Buyer's Club $35.99 Non-Member $39.99 Compare at $45.99

    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. Men's WSI® Compression Shorts

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

    In Stock

  1. WSI® Arctic HEATR® Vent Shirt, Black

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

    In Stock

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

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

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

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

    In Stock

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

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

    In Stock

  2. Carhartt® Heavyweight Crewneck Shirt

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

    In Stock

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

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

    In Stock

  4. Carhartt® Midweight Cotton Union Suit, Red

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

    In Stock

1-48 of 49
Show:
Pages:
  1. 1
  2. 2
2

Related Products

Men's Guide Gear Silk Base Layer Crewneck, Black

Item # WX2-208075

4 stars
(47)
  • 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

Add to Wishlist

Men's Guide Gear® Silk Base Layer Crewneck, 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. Imported.

  • 100% Silk
  • Lightweight fabric
  • Machine wash gentle cycle, tumble dry low.

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!

2-Pk. TRU-SPEC CORDURA Base Layer Boxer Briefs

Item # WX2-618726

  • Info

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

Buyer's Club $13.49 Non-Member $14.99

Add to Wishlist

2-Pk. TRU-SPEC® CORDURA® Base Layer Boxer Briefs. Defend your base!

No melt. No drip. No sweat. Put a layer of protection against your skin with one of the world's toughest undergarments.

Details:

  • CORDURA® 60/40 cotton / nylon fabric is no-melt / no-drip, and it absorbs more moisture and dries faster than 100% cotton
  • Won't melt or drip like polyester
  • Flat-lock seams for no-chafe comfort
  • Elastic waistband with gripper to secure your shirttail
  • Rib-knit hem
  • Machine wash / dry
  • Imported

State Size, as available in the Shopping Cart.

!!! Limited Quantities !!!

Carhartt® Heavyweight Cotton Thermal Long Underwear Bottoms

Item # WX2-427601

5 stars
(6)
  • 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!

Fox Tactical™ ECWCS Polypropylene Long Underwear Top

Item # WX2-296588

  • 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 $30.95

Add to Wishlist

Fox TacticalTM ECWCS Polypropylene Long Underwear Top: Extreme Cold Weather Clothing System.

Military-style "long johns", made in the USA from mil-spec 10.5-oz. 100% polypropylene, with fleece lining for extra warmth and comfort. For work or play in the winter cold, these can't be beat. Crew neck, rib-knit cuffs. Machine wash / dry. Imported.

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

Join or Renew The Sportsman’s Guide Buyer’s Club® Today!

$29.99 per year   • Save up to 10% on purchases every day.
Join Renew More Info