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 55
Show:
Pages:
  1. 1
  2. 2
2
  1. 2-Pk. of Indera Mills® Colored Thermal Long John Bottoms

    4 stars
    (23)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $32.00

    In Stock

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

    5 stars
    (60)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $75.00

    In Stock

  3. Under Armour® ColdGear® Infrared EVO Mock Turtleneck

    5 stars
    (17)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  4. 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

  1. Under Armour® ColdGear® Infrared EVO Leggings

    4 stars
    (13)
    Non-Member $54.99 Buyer's Club Discount Applied at Checkout!

    In Stock

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

    4 stars
    (17)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $32.00

    In Stock

  3. Men's Guide Gear® Kingsilk Bottoms, Black

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

    In Stock

  4. Polar King® Thermal Bottoms

     
    Buyer's Club $17.99 Non-Member $19.99

    In Stock

  1. Polar King® Thermal Top

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

    In Stock

  2. 32 Degrees HEAT® Base Layer Bottoms

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

    In Stock

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

    5 stars
    (71)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $40.00

    In Stock

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

    4 stars
    (42)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $40.00

    In Stock

  1. 32 Degrees HEAT® Base Layer Crew-neck Top

    4 stars
    (4)
    Buyer's Club $17.99 Non-Member $19.99

    In Stock

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

    4 stars
    (32)
    Buyer's Club $26.99 Non-Member $29.99 Compare at $50.00

    In Stock

  3. Under Armour® Base 2.0™ Leggings

    4 stars
    (3)
    Non-Member $54.99 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. Under Armour® Base 2.0™ Crew

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

    In Stock

  2. Under Armour® Base 3.0™ Crew

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

    In Stock

  3. 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

  4. 4 Hanes® Flannel Boxers

    4 stars
    (16)
    Buyer's Club $22.49 Non-Member $24.99 Compare at $40.00

    In Stock

  1. 32 Degrees HEAT® Heat Fleece Top

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

    In Stock

  2. Guide Gear® Kingsilk Balaclava, Black

    4 stars
    (11)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $30.00

    In Stock

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

    4 stars
    (27)
    Buyer's Club $8.99 Non-Member $9.99 Compare at $25.00

    In Stock

  4. 32 Degrees HEAT® Heat Fleece Bottoms

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

    In Stock

  1. 6-Pk. Guide Gear® Boxer Briefs

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

    In Stock

  2. Terramar® Thermolator Leggings

     
    Buyer's Club $26.99 Non-Member $29.99

    In Stock

  3. Carhartt® Irregular Base Force® Super PT Bottoms

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

    In Stock

  4. 6-Pk. Guide Gear® Pouch Briefs

    5 stars
    (79)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $38.00

    In Stock

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

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

    In Stock

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

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

    In Stock

  3. Terramar® Thermolator 1/2-zip Top

     
    Buyer's Club $26.99 Non-Member $29.99

    In Stock

  4. Carhartt® Base Force Midweight Bottoms

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

    In Stock

  1. Carhartt® Base Force Midweight Crew Top

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

    In Stock

  2. 6-Pk. of Guide Gear® Camp Base Boxer Briefs, Camo

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

    In Stock

  3. 6-Pk. of Guide Gear® Pouch Briefs, Camo

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

    In Stock

  4. Outdoor Research® Sequence™ Long-sleeved Crew

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

    In Stock

  1. Outdoor Research® Sequence™ Leggings

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

    In Stock

  2. 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

  3. 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

  4. 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

  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. 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

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

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

    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. 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

  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

1-48 of 55
Show:
Pages:
  1. 1
  2. 2
2

Related Products

10 new Italian Military Surplus Air Force Boxer Shorts, White

Item # WX2-589988

2 stars
  • 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

Add to Wishlist

10 new Italian Military Surplus Air Force Boxer Shorts.

On the tarmac, and they're off! Italian top guns prefer these Boxer Shorts for down-under comfort on the ground or roaring mach 2. So will you!

  • 65/35 polyester / cotton fabric
  • Elastic waist with drawstring
  • Rear pocket
  • Italian Air Force insignia embroidery.

Condition: brand new. State Size, as available in the Shopping Cart. Fly high, order ONLINE!

!!! Limited Quantities !!!

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

Item # WWAZ-597480

  • Info

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

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

Add to Wishlist

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.

Scent Blocker® Super Skin™ Base Layer Shirt

Item # WX2-227049

  • Info

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

Starting at...
Buyer's Club $35.99 Non-Member $39.99

Add to Wishlist

Scent Blocker® Super SkinTM Base Layer Long-sleeved Shirt. Hunt hard, stay warm.

Best of both worlds... blended Merino wool and polyester. Provides a super-effective temperature-controlling, moisture-wicking, quick-drying layer. S3® Advanced antimicrobial technology inhibits odor-causing bacteria.

Form-fitting, easy-moving comfort in all sorts of conditions! Merino blend material also makes for a durable garment that resists shrinking. Flat seams prevent chafing. Shirt: Crewneck, thumb loops. Imported.

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

Under Armour® Treestand Base Top, Black

Item # WX2-592259

  • Info

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

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

Add to Wishlist

Under Armour® Treestand Base Tops keep you warm on those chilly winter mornings.

With these Under Armour® Treestand Tops, you'll stay toasty warm without adding bulk. Plus, they contain Under Armour's scent-control technology, so wild game will never smell you coming!

Features:

  • 100% polyester construction helps wick moisture away
  • Under Armour scent-control technology helps contain odor
  • High-pile interior is soft and super comfortable
  • Antimicrobial
  • Ergonomic flatlock seams.
State 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