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Men's Long Underwear


Just the right long underwear for your activity. Choose from Merino Wool, Cotton, Polypropylene, and more!

Click any option on the left to narrow your results

Mens Long Underwear: The Practical Choice

For many people the very thought of long underwear for men brings out a little chuckle. While it may look a little different than what a man might typically wear, long underwear for men is extremely practical in colder climates. While some men have a job that requires long hours outdoors rain or shine and other men simply love taking a day off to play on the snowy slopes of some nearby mountains. No matter what your reasoning, purchasing a pair of mens long underwear is likely going to be one of the best decisions you can make for extended periods of exposure to the unforgiving elements of winter.

Choosing the Right Brand

For many men looking to purchase a pair of long underwear it is surprising to see all the different options they have. There are several different brands to choose from, so make sure you choose a pair that will last for years to come. The best long underwear for men might cost a little more upfront, but the quality of warmth and protection provided by the better brands is well worth the extra cost up front. The top long underwear brands for men will provide not only better warmth and protection, but they are constructed to last for years to come. So when choosing which brand is right for you, take the time to consider how often you will use this underwear, and how valuable your comfort is.

Long Underwear

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  1. Indera Mills Polypropylene Thermal Underwear Pant for Men

    • Wicks sweat • Retains maximum warmth • Dries quickly • Prevents hypothermia • Used by US Coast Guard and US Navy

    Regular Price: $19.13

    Special Price $13.49

  2. Indera Mills Polypropylene Thermal Underwear Shirt for Men

    • Wicks sweat • Retains maximum warmth • Dries quickly • Prevents hypothermia • Used by US Coast Guard and US Navy

    Regular Price: $19.13

    Special Price $13.49

  3. Indera Mills Lightweight Cotton Polyester Blend Waffle Knit Thermal Underwear Bottom for Men

    • Waffle Knit • Traps body heat and retains it • Ribbed Cuffs • Polyester blend dries quicker than 100% cotton • 65% cotton/35% polyester
  4. Indera Mills Lightweight Cotton Polyester Blend Waffle Knit Thermal Underwear Top for Men

    • Waffle Knit • Traps body heat and retains it • Ribbed Cuffs • Polyester blend dries quicker than 100% cotton • 65% cotton/35% polyester
  5. Indera Mills Color Dyed Cotton Polyester Blend Waffle Knit Thermal Top for Men

    • Waffle Knit • Traps body heat and retains it • Ribbed Cuffs • Polyester blend dries quicker than 100% cotton • 65% cotton/35% polyester
    $10.00
  6. Indera Mills 100% Cotton Medium Weight Waffle Knit Thermal Shirts for Men

    • Medium Weight 6.5 oz Fabric • Waffle Knit • Ribbed Cuffs • Rated for Very Cold Temps • 100% Cotton
  7. Indera Mills 100% Cotton Red Union Suit Long Johns For Men

    • Ribbed knit Cotton Fabric for maximum comfort • Preshrunk • Ribbed Cuffs • Button down front • Rear vertical flap with 1 button closure • 5.5 oz 100% Cotton
    $26.99
  8. Indera Mills Lightweight Ribbed Knit 100% Cotton Thermal Bottom For Men

    • Preshrunk • Ribbed Knit(like a regular cotton t) • Bright white color • Elastic waistband • Rated for mild cold • 5.5oz 100% cotton
    $12.99
  9. Indera Mills Lightweight Ribbed Knit 100% Cotton Thermal Shirt For Men for Men

    • Preshrunk • Ribbed Knit(like a regular cotton T) • Bright white color • Rated for mild cold • 5.5oz 100% cotton
    $12.99
  10. Heavy Weight Fleece Polypropylene Thermal Underwear Crew Neck Top for Adult

    • Crew Neck Thermal Underwear Top • Our Warmest Thermal Underwear Product! • Comfortable on skin due to 100% polypropylene with nice terry finish • Thick but lightweight material wicks sweat and moisture extremely well • Fast drying • Genuine U.S. Military Issue Polypropylene Thermals, a vital part of the Extended Cold Weather Clothing System(ECWCS) • Perfect for staying warm and dry during outdoor cold weather activities • Not the best looking or highest quality but they are sure to keep you warm • Available in black or brown and sizes ranging from adult small through adult 3X • We offer price discounts for bulk orders. Please call for details.
    $20.95
  11. Heavy Weight Fleece Polypropylene Thermal Underwear Turtle Neck Top for Adult

    • Turtle Neck Thermal Underwear Top • Our Warmest Thermal Underwear Product! • Comfortable on skin due to 100% polypropylene with nice terry finish • Thick but lightweight material wicks sweat and moisture extremely well • Fast drying • Genuine U.S. Military Issue Polypropylene Thermals, a vital part of the Extended Cold Weather Clothing System(ECWCS) • Perfect for staying warm and dry during outdoor cold weather activities • Not the best looking or highest quality but they are sure to keep you warm • Available in black or brown and sizes ranging from adult small through adult 3X • We offer price discounts for bulk orders. Please call for details.
    $22.95
  12. Coldpruf Midweight 2 Layer Merino Wool Blend Long Underwear Bottom for Men

    • Midweight 2 Layer Thermal Fabric • Super soft next to skin • Traps and retains natural body heat • Tagless • Flatlock Seams • 100% Cotton Inside / 65% Cotton,25% Merino Wool,10% Nylon Outside

    Regular Price: $28.00

    Special Price $16.99

  13. Coldpruf Cotton Poly Thermal Underwear Bottom for Men

    • 2 layer thermal fabric traps body heat • Rated for cold to very cold temps • Tagless • Extended tail stays tucked in • Flatlock seams for comfort • 60% Cotton / 40% Polyester • Big Sizes

    Regular Price: $15.00

    Special Price $10.99

  14. Coldpruf Merino Wool Blend Red Union Suit Long Johns for Men

    • Midweight 2 Layer Thermal Fabric • Super soft next to skin • Traps and retains natural body heat • Ribbed Cuffs • Gusseted inner thighs for added durability • Tagless • Flatlock Seams • Single button vertical rear flap • Full button front closure • 100% Cotton Inside / 65% Cotton,25% Merino Wool,10% Nylon Outside

    Regular Price: $58.00

    Special Price $36.99

  15. Coldpruf Performance Merino Wool Blend Ski Thermal Top for Men

    • Hi Performance Wicking Thermals • Midweight Thermal Fabric • Wicks sweat and dries fast • Keeps your skin dry • Tagless • Ribbed Cuffs • Longer tail stays tucked in better • Flatlock Seams • 100% Polyester Inside / 70% Polyester,30% Merino Wool Outside
    $24.99
  16. Coldpruf Performance Merino Wool Blend Ski Thermal Bottom for Men

    • Hi Performance Wicking Thermals • Midweight Thermal Fabric • Wicks sweat and dries fast • Keeps your skin dry • Tagless • Ribbed Cuffs • Longer tail stays tucked in better • Flatlock Seams • 100% Polyester Inside / 70% Polyester,30% Merino Wool Outside
  17. Coldpruf Single Layer 100% Polypropylene Long Underwear Top for Men

    • Polypro retains more heat than any other fabric • Polypro dries extremely fast • Flatlock Seams • Tagless • Ribbed Cuffs • Extended tail stays tucked in • 100% Polypropylene

    Regular Price: $17.99

    Special Price $15.99

  18. Coldpruf Single Layer 100% Polypropylene Long Underwear Pant for Men

    • Polypro retains more heat than any other fabric • Polypro dries extremely fast • Flatlock Seams • Tagless • Ribbed Cuffs • Extended tail stays tucked in • 100% Polypropylene

    Regular Price: $17.99

    Special Price $15.99

  19. Coldpruf Lightweight Polyester Performance Stretch Ski Thermal Top for Men

    • High performance CPT polyester • Easy care laundering • Wicks sweat and dries quickly • Excellent body heat retention • Engineered for cold to very cold temps • 360 Degree stretch for form fitting comfort • Perfect for high endurance winter sports • Tagless • Ribbed Cuffs • Extended tail remains tucked in better • Flatlock Seams • 96% polyester, 4% Spandex

    Regular Price: $25.00

    Special Price $19.99

  20. Coldpruf Extreme Performance Long Underwear Top for Men

    • Our warmest Coldpruf long underwear (rated for extreme cold temperatures) • Comparable to UNDERARMOUR® brand • Spandex stretch engineered for high activity (360 degree stretch) • Double layer thermal fabric maximizes heat retention • Exceptional moisture wicking • Dries quickly • Retains body heat even when wet • Tagless • Ribbed Cuffs • Longer tail stays tucked in better • Flatlock Seams • 96% polyester, 4% Spanex inside and outside

    Regular Price: $41.00

    Special Price $19.99

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