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

The base layer is the layer next to the skin, usually thought of as being 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. Zips at the neck or even full length can help regulate temperature. A golden rule is to avoid cotton.

Cold Weather Underwear


Icebreaker BodyFit 200 Oasis Hooded Top - Men's
$110


Dynafit Thermal 1/2-Zip Shirt - Long-Sleeve - Men's Asphalt
$129.95


Patagonia Capilene Daily Shirt - Short-Sleeve - Women's
On sale - now $17.4 - was $29


Patagonia Capilene Daily Tank Top - Women's
On sale - now $18.85 - was $29


Neff Base Layer Top - Long-Sleeve - Men's
On sale - now $21.97 - was $39.95


Patagonia Capilene Daily Graphic T-Shirt - Short-Sleeve - Women's
On sale - now $23.4 - was $39


Patagonia Capilene Daily Shirt - Long-Sleeve - Women's
On sale - now $23.4 - was $39


Stoic Alpine Merino 150 Crew Shirt - Long-Sleeve - Women's
On sale - now $23.7 - was $79


Burton AK Power Dry Crew - Short-Sleeve - Men's
On sale - now $27.98 - was $69.95


Patagonia Capilene Lightweight Crew Shirt - Men's
On sale - now $31.85 - was $49


Patagonia Capilene Lightweight Crew Top - Women's
On sale - now $31.85 - was $49


Duckworth Maverick T-Shirt - Short-Sleeve - Women's
On sale - now $32.47 - was $64.95


Armada Contra Baselayer Crew - Long-Sleeve - Men's
On sale - now $32.97 - was $59.95


Helly Hansen Active Flow 1/2-Zip Top - Men's
On sale - now $32.97 - was $59.95


Spyder Styler Top - Women's
On sale - now $34.97 - was $69.95


Spyder Captain Top - Men's
On sale - now $38.47 - was $69.95


Icebreaker Everyday Crew Top - Women's
On sale - now $39 - was $60


Icebreaker Siren Sweetheart Top - Short-Sleeve - Women's
On sale - now $41.99 - was $69.99


Icebreaker Siren Racerback Tank Top - Women's
On sale - now $42 - was $60


The North Face Light Crew Neck Top - Men's
$44.95


Black Crows Corpus Baselayer Top - Men's
On sale - now $44.97 - was $89.95


Spyder Skeleton Top - Men's
On sale - now $44.98 - was $99.95


Icebreaker BodyFit 200 Oasis Crew - Long-Sleeve - Women's
On sale - now $45 - was $90


Under Armour Ymer 1/2-Zip Top - Men's
On sale - now $45.49 - was $69.99


Icebreaker BodyFit 150 Siren Sweetheart Top - Long-Sleeve - Women's Jet Heather
On sale - now $47.99 - was $79.99


Arc'teryx Phase AR Crew - Long-Sleeve - Women's
On sale - now $48.72 - was $74.95


Icebreaker BodyFit 150-Ultralite Anatomica V-Neck Shirt - Short-Sleeve - Men's
On sale - now $48.99 - was $69.99


Icebreaker Everyday Cami - Women's
$50


Arc'teryx Phase AR Zip-Neck Top - Women's Poseidon
On sale - now $51.32 - was $78.95


Icebreaker BodyFit 200 Oasis Crew - Short-Sleeve - Men's
On sale - now $52 - was $80


Icebreaker Bodyfit 200 Lightweight Zone Crew - Long-Sleeve - Men's
On sale - now $55 - was $110


Icebreaker BodyFit 260 Tech Crew - Men's
On sale - now $55 - was $110


Icebreaker Oasis New Streak Crew - Long Sleeve - Men's
On sale - now $55 - was $100


Icebreaker Oasis Crewe Aoraki II Top - Women's
On sale - now $55 - was $100


Arc'teryx Phase SL Zip Neck Top - Women's Black
On sale - now $55.26 - was $78.95


Patagonia Merino Lightweight Crew Top - Men's
On sale - now $55.3 - was $79


Rab MeCo 120 Top - Men's
On sale - now $58.47 - was $89.95


Ibex Woolies 1 Zip-Neck Top - Women's
On sale - now $58.47 - was $90


Patagonia Capilene Lightweight Zip-Neck Top - Men's Cusco Orange
$59


Helly Hansen Dry Charger 1/2-Zip Top - Men's
$59.95