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. Polar King Thermal Bottoms

    3 stars
    (5)
    Clearance $9.99

    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)
    Clearance $9.99

    In Stock

  1. 3-Pk. Walls Camo Boxers, Mossy Oak Break-Up

    2 stars
    (1)
    Buyer's Club $17.99 Non-Member $19.99 Compare at $42.00

    In Stock

  2. 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

  3. 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

  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 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 Crew-neck Top

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

    In Stock

  3. Under Armour ColdGear Infrared EVO Leggings

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

    In Stock

  4. 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

  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. 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. Guide Gear Performance T-shirt

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

    In Stock

  2. Under Armour Base 2.0 Crew

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

    In Stock

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

    4 stars
    (21)
    Clearance $14.99 Compare at $32.00

    In Stock

  4. 32 Degrees HEAT Heat Fleece Bottoms

    4 stars
    (5)
    Clearance $19.99

    In Stock

  1. 32 Degrees HEAT Heat Fleece Top

    5 stars
    (2)
    Clearance $14.99

    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. 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

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

    5 stars
    (1)
    Buyer's Club $52.19 Non-Member $57.99

    In Stock

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

    3 stars
    (1)
    Buyer's Club $52.19 Non-Member $57.99

    In Stock

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

    3 stars
    (2)
    Clearance $39.99 Compare at $66.00

    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 Base Force Midweight Bottoms

     
    Buyer's Club $31.49 Non-Member $34.99

    In Stock

  4. Carhartt Base Force Midweight Crew Top

     
    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. Under Armour Camo Boxer Jock

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

    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

  1. Outdoor Research Sequence Leggings

     
    Non-Member $49.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  2. Outdoor Research Sequence Long-sleeved Crew

     
    Non-Member $49.99 Buyer's Club Discount Applied at Checkout!

    In Stock

  3. 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

  4. Clam™ Ice Armor Merino Wool Blend Base Layer Bottom

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

    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. Scent Blocker® S3® Arctic Fleece Base Layer Pants

     
    Buyer's Club $62.99 Non-Member $69.99 Compare at $79.99

    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. Scent Blocker® Super Skin™ Base Layer Shirt

     
    Buyer's Club $35.99 Non-Member $39.99 Compare at $49.99

    In Stock

  3. Scent Blocker® Super Skin™ Base Layer Pants

     
    Buyer's Club $35.99 Non-Member $39.99 Compare at $49.99

    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

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

Item # WX2-307432

4 stars
(28)
  • Info

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

Clearance $14.99 Compare at $32.00

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Indera Mills® Performance Thermal Bottoms are thick, comfortable and WARM. SAVE BIG BUCKS!

Supremely insulating! Since 1914 Indera Mills® has been making top-quality clothing to embrace the American lifestyle. It's all about creating medium-activity garments to keep you warm, goose-bump free and comfortable in the cold and extreme cold.

Whether you're trekking through the woods in search for your trophy on a frosty day, ice fishing or working a long shift outside in the dead of winter... you'll feel just right all day long with this name brand stuff. 

  • 65/35 cotton / polyester blend
  • Thermal knit traps and retains body heat
  • Full cut for a comfortable fit
  • Shrinkage controlled for lasting size and shape.

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

Polar King Thermal Bottoms

Item # WX2-608578

3 stars
(5)
  • Info

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

Clearance $9.99

Add to Wishlist

Polar King® Thermal Bottoms.

Hot stuff! These toasty Thermal Bottoms have rib-knit cuffs and an elastic waist so they stay in place when layering, and they keep the warmth where it belongs... on you! Machine wash / dry. Imported. 50/50 Cotton / Poly blend fabric.

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

Men's Guide Gear Silk Base Layer Bottom, Black

Item # WX2-208077

4 stars
(51)
  • 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® Silk Base Layer Bottom, 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.

  • 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!

Polar King Thermal Top

Item # WX2-608577

3 stars
(5)
  • Info

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

Clearance $9.99

Add to Wishlist

Polar King® Thermal Top.

Hot stuff! This toasty crew-neck Thermal Top has rib-knit cuffs so it doesn't ride up your arms when layering, and it keeps the warmth where it belongs... on you! Machine wash / dry. Imported. 50/50 Cotton / Poly blend fabric.

State Color and Size, as available in the Shopping Cart. Don't be chilly this winter.

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