Winter Underwear - The Base Layer (Foundation)
 - Arctic / Antarctic, Cold Weather, Thermal Clothing

The base layer is the layer next to the skin underwear, or in cold climates, "thermal" underwear. Despite cold temperatures, perspiration is still a problem, in fact it can be more so than in a temperate climate. The body loses moisture at almost all times whether undergoing any great level of exertion or not. If there are numerous insulating layers keeping you warm, then it is more difficult for the perspiration to be able to escape. If the perspiration is not removed it will result in the wearer becoming uncomfortable and a feeling of "clamminess" as well as decreasing the efficiency of the insulating layers.

Underwear that is able to wick this moisture away from the skin surface therefore becomes much more important and this is an important factor in choosing garments. Modern "thermals" are made of synthetic fibers such and polypropylene or "fleece" that have good insulating properties and are also able to efficiently wick moisture away from the skin. A golden rule is to avoid cotton.

Men's Long Underwear - Bottoms
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Hanro Woolen Silk Long Underwear (Anthracite) Men
Hanro Woolen Silk Long Underwear (Anthracite) Men's Underwear
$145

Hanro Woolen Silk Long Underwear (Cygne) Men
Hanro Woolen Silk Long Underwear (Cygne) Men's Underwear
$145

2(X)IST Tartan Capri Long Johns (Black) Men
2(X)IST Tartan Capri Long Johns (Black) Men's Underwear
On sale - now $24.99 - was $30

2(X)IST Essentials Long Underwear (Black) Men
2(X)IST Essentials Long Underwear (Black) Men's Casual Pants
$30

2(X)IST Essentials Long Underwear (Charcoal) Men
2(X)IST Essentials Long Underwear (Charcoal) Men's Casual Pants
$30

2(X)IST Essentials Long Underwear (White) Men
2(X)IST Essentials Long Underwear (White) Men's Casual Pants
$30

BOSS Hugo Boss Long John 24 Solid (Charcoal) Men
BOSS Hugo Boss Long John 24 Solid (Charcoal) Men's Underwear
$42

Boss
Boss 'Coolmax' Cotton Blend Long Underwear
$54

MyPakage Weekday First Layer Print Long Underwear - Men
MyPakage Weekday First Layer Print Long Underwear - Men's
$54.95

Women's Long Underwear - Bottoms
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Hanro Woolen Silk Pant 1422 (Cygne) Women
Hanro Woolen Silk Pant 1422 (Cygne) Women's Underwear
$130

Hot Chillys Peach Print Bottom (Silver Cheetah) Women
Hot Chillys Peach Print Bottom (Silver Cheetah) Women's Outerwear
On sale - now $24.99 - was $60

Hot Chillys Peach Print Bottom (Copper Cheetah) Women
Hot Chillys Peach Print Bottom (Copper Cheetah) Women's Outerwear
On sale - now $29.99 - was $60

Hue Smoothing Capris
Hue Smoothing Capris
$30

Hue Smoothing Capris
Hue Smoothing Capris
$30

Hot Chillys Peach Print Bottom (Snow Leopard) Women
Hot Chillys Peach Print Bottom (Snow Leopard) Women's Outerwear
$45

Hot Chillys Peach Print Bottom (Tiger) Women
Hot Chillys Peach Print Bottom (Tiger) Women's Outerwear
$45

Hot Chillys Mtf 4000 Ankle Tight (Black) Women
Hot Chillys Mtf 4000 Ankle Tight (Black) Women's Outerwear
$50

Hot Chillys MTF Flex Capris (Black/Black) Women
Hot Chillys MTF Flex Capris (Black/Black) Women's Capri
$55

Men's Long Underwear - Tops
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Hot Chillys Wool Hooded Pullover (Black/Black) Men
Hot Chillys Wool Hooded Pullover (Black/Black) Men's Sweatshirt
$100

SmartWool Midweight Pattern Crew - Men
SmartWool Midweight Pattern Crew - Men's
$104.95

Norr Wool One-Piece Long Underwear - Men
Norr Wool One-Piece Long Underwear - Men's
$200

Hot Chillys Micro-Elite Chamois 8K Zip-T (White) Men
Hot Chillys Micro-Elite Chamois 8K Zip-T (White) Men's T Shirt
On sale - now $29.99 - was $65

Hot Chillys Micro-Elite Chamois 8K Zip-T (Black) Men
Hot Chillys Micro-Elite Chamois 8K Zip-T (Black) Men's T Shirt
On sale - now $32.99 - was $65

Hot Chillys Wool Double Layer Crew Neck (Charcoal Heather) Men
Hot Chillys Wool Double Layer Crew Neck (Charcoal Heather) Men's Clothing
$40

Hot Chillys Peach Solid Crewneck (Black) Men
Hot Chillys Peach Solid Crewneck (Black) Men's Long Sleeve Pullover
$40

Hot Chillys Peach Solid Crewneck (Charcoal) Men
Hot Chillys Peach Solid Crewneck (Charcoal) Men's Long Sleeve Pullover
$40

Hot Chillys Peach Solid Crewneck (White) Men
Hot Chillys Peach Solid Crewneck (White) Men's Long Sleeve Pullover
$40

Women's Long Underwear - Tops
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Hot Chillys Peach Print Crewneck (Copper Cheetah) Women
Hot Chillys Peach Print Crewneck (Copper Cheetah) Women's Clothing
On sale - now $24.99 - was $60

Hot Chillys Peach Print Crewneck (Primitive Pop/Black) Women
Hot Chillys Peach Print Crewneck (Primitive Pop/Black) Women's Clothing
On sale - now $32.98 - was $45

Hot Chillys MTF Sublimated Print Scoop Neck Top (Abalone/Black) Women
Hot Chillys MTF Sublimated Print Scoop Neck Top (Abalone/Black) Women's T Shirt
On sale - now $39.27 - was $55

Hot Chillys Peach Solid Crewneck (White) Women
Hot Chillys Peach Solid Crewneck (White) Women's Long Sleeve Pullover
$40

Hot Chillys Peach Print Crewneck (Silver Cheetah) Women
Hot Chillys Peach Print Crewneck (Silver Cheetah) Women's Clothing
On sale - now $42.41 - was $60

Hot Chillys Micro-Elite Chamois Sublimated Print Crewneck (Electric Circus/Black) Women
Hot Chillys Micro-Elite Chamois Sublimated Print Crewneck (Electric Circus/Black) Women's T Shirt
On sale - now $42.41 - was $60

Hot Chillys Micro-Elite Chamois Sublimated Print Crewneck (Katmandu/Black) Women
Hot Chillys Micro-Elite Chamois Sublimated Print Crewneck (Katmandu/Black) Women's T Shirt
On sale - now $42.41 - was $60

Hot Chillys Peach Print Crewneck (Snow Leopard) Women
Hot Chillys Peach Print Crewneck (Snow Leopard) Women's Clothing
$45

Hot Chillys Geo Pro Scoopneck (Black Heather) Women
Hot Chillys Geo Pro Scoopneck (Black Heather) Women's Long Sleeve Pullover
$45