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. Polar King Thermal Bottoms

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

    In Stock

  2. 32 Degrees HEAT Base Layer Bottoms

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

    In Stock

  3. 32 Degrees HEAT Base Layer Crew-neck Top

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

    In Stock

  4. Polar King Thermal Top

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

    In Stock

  1. Under Armour ColdGear Infrared EVO Mock Turtleneck

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

    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. 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

  4. 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

  1. Under Armour ColdGear Infrared EVO Leggings

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

    In Stock

  2. 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

  3. 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

  4. Under Armour Base 2.0 Crew

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

    In Stock

  1. 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

  2. 6-Pk. Guide Gear® Boxer Briefs

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

    In Stock

  3. 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

  4. Carhartt® Irregular Base Force® Super PT Bottoms

    4 stars
    (2)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $44.99

    In Stock

  1. 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

  2. 6-Pk. Guide Gear Pouch Briefs

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

    In Stock

  3. 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

  4. Guide Gear Performance T-shirt

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

    In Stock

  1. Under Armour® Base 3.0™ Crew

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

    In Stock

  2. 32 Degrees HEAT Heat Fleece Bottoms

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

    In Stock

  3. 32 Degrees HEAT Heat Fleece Top

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

    In Stock

  4. 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

  1. 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

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

    3 stars
    (31)
    Clearance $19.99 Compare at $50.00

    In Stock

  3. 4 Hanes Flannel Boxers

    4 stars
    (17)
    Clearance $14.99 Compare at $40.00

    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 Force Super Cold Weather Thermal Underwear Pants, Black

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

    In Stock

  4. Terramar Thermolator Leggings

     
    Buyer's Club $17.99 Non-Member $19.99

    In Stock

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

    4 stars
    (29)
    Buyer's Club $8.99 Non-Member $9.99 Compare at $25.00

    Item is currently on backorder

  2. Carhartt Base Force Midweight Bottoms

     
    Buyer's Club $31.49 Non-Member $34.99

    In Stock

  3. Carhartt Base Force Midweight Crew Top

     
    Buyer's Club $31.49 Non-Member $34.99

    In Stock

  4. Outdoor Research Sequence Leggings

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

    In Stock

  1. Outdoor Research Sequence Long-sleeved Crew

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

    In Stock

  2. 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

  3. 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

  4. 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

  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. 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

  3. 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

  4. WSI® WikMax HEATR® 1/4-zip Top

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

    In Stock

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

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

    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

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Related Products

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

Item # WWAZ-597480

3 stars
(2)
  • Info

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

Clearance $49.99 Compare at $66.00

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Browning® Hell's Canyon Midweight Base Layer Top. A good day of hunting starts with the right gear!

Your freeze-fighting foundation! Effectively combat cold weather with this Browning® Hell's Canyon Midweight Base Layer Top. Slip it on before your outerwear for increased warmth without extra bulk. Plus, it features Odorsmart antimicrobial technology, which helps control bacteria that causes human odor.

Features:
  • Midweight 100% polyester fabric is ideal for cold conditions
  • Smooth face with fleece inner layer adds comfort
  • Odorsmart antimicrobial technology helps contain human scent
  • Flatlock stitching for additional comfort
  • Athletic cut
  • Mock neck helps lock in heat.

State Size, as available in the Shopping Cart.

Men's Under Armour® ColdGear® EVO Base Layer Mock Shirt

Item # WX2-592262

5 stars
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  • Info

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

Buyer's Club $52.19 Non-Member $57.99

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Under Armour® ColdGear® EVO Scent Control Base Layer Shirt. The ultimate in warm, scent-stealthy, near-silent hunting gear.

Under Armour® is the original moisture-wicking performance wear, favored by top athletes and hunters. As a base layer, it's unbeatable at keeping you at your best. Infrared fabric technology holds in heat without adding bulk. Scent-control tech keeps your scent under wraps.

Get into the best:

  • 87/13 polyester / elastane ColdGear® fabric, with snugly supportive compression fit and moisture-wicking comfort
  • Brushed fabric stays quiet in the field
  • Infrared fabric technology locks in warmth without adding bulk
  • Scent-control technology masks you from your prey and lasts 10X longer than carbon
  • Flat-lock seams won't chafe
  • Antimicrobial to inhibit odor bacteria
  • Shirt has mock turtleneck
  • Machine wash / hang dry. Imported.

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

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!

32 Degrees HEAT Heat Fleece Top

Item # WX2-610528

5 stars
(2)
  • Info

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

Buyer's Club $22.49 Non-Member $24.99

Add to Wishlist

32 Degrees HEAT® Heat Fleece Top gives your base layer a boost!

Fleece warmth that also fights odor, sweat and static! Not only does every fiber in the Top help retain body heat, but it also minimizes unpleasant odor caused by sweating. Plus, it's quick-drying to wick away moisture, keeping you dry and comfortable.

Can't stand static? No worries... the Top contains a special anti-static agent to reduce clings and discomfort. And that cozy Fleece will keep you toasty in the field or comfortable lounging around the cabin.

  • Stretch yarns maximize long-term comfort in a lasting shape
  • Soft-hand feel with 37/34/25/4 acrylic / polyester / rayon / spandex blend
  • Mock turtleneck style
  • Machine wash / hang dry
  • Imported.

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

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