Women's Thermal Underwear

This women's active base layer top from Icebreaker has great range, taking you from mountain biking to hiking to spring skiing. Made of soft, nonirritating merino wool, this long underwear top resists...

With its pure merino, double stitched neckline and thumb loops, the Icebreaker Olympia Crew is a great performer. It fits close to the body, and these awesome color combinations ensure you'll be the c...

d3o contains intelligent molecules that flow with you as you move, but lock together on impact, absorbing the impact's energy. Under normal conditions d3o is soft and pliable, but on impact the materi...

The Spyder Womens Cortina Dry W.E.B. T-Neck is made from DRY W.E.B. Bi-Component Polyester Pique wicking material. DRY W.E.B. absorbs perspiration quickly, then transports it to the outer layer of the...

An ideal-fitting technical foundation for maximized wicking performance. Lightweight fibers move moisture and a silver fabric treatment reacts with sweat to cut down on backcountry stench. Features...

A natural base layer for prolonged backcountry use. Itchless stretch-knit Merino remains nearly odorless and soft next to skin, while retaining insulative properties when damp. A lycra infusion helps ...

The Snow Angel Chamonix womens zip turtleneck long underwear top provides ultra warmth when the conditions are cold to coldest. A substantial European style fleece, Chamonix is recommended as an inner...

CW-X Conditioning Wear featuring patented Conditioning Web technology and Auto-Sensor fabric, combined to provide a Targeted Support layer to the athlete in cold weather conditions. All CW-X Insula...

Discontinued . Next to the warmth of merino wool, it?s the collar of Icebreaker?s Olympia 260 zip base layer top that really makes it something special. Versatile design can be worn up, down and folde...

CW-X Conditioning Wear featuring patented Conditioning Web technology and Auto-Sensor fabric, combined to provide a Targeted Support layer to the athlete in cold weather conditions. All CW-X Insula...

The Nature 200 Scoop long underwear top from Icebreaker helps you stay comfortable all day and in any temperature. Made of soft, nonirritating merino wool, the Nature 200 long underwear top resists od...

ARCTERYX???s Phase SV Zip Neck provides mid-level insulation and high-performance moisture management for frigid days in the alpine ??? an ideal baselayer top for stop-and-go activities. Moisture is w...

The Helly Hansen Freeze Prowool 1/2 Zip Turtleneck Top for Women is a baselayer top designed with a front ½ zip. The Freeze Zip Turtle lets you determine when you want to dump the heat. Built with th...

This Smartwool NTS Midweight Turtleneck provides a perfect base or stand alone layer for everything from biking to skiing!

Product Features: Turtleneck
* Long sleeves
* Curved hemline...

SmartWool fibers provide the most efficient moisture management system, keeping you cool or warm.

Product Features:
* Soft next to your skin Active fit
* Flatlock seam construction eli...

Hot Chilly's Micro-Elite Chamois is the ticket if you are looking for versatility. The Bio-Silver(R) anti-microbial properties reduce bacteria and odor naturally and is specifically adapted to be us...

The Nature 200 Crew from Icebreaker helps you stay comfortable all day long and in any temperature. Made of soft, nonirritating merino wool, the Nature 200 underwear crew resists odors naturally. Meri...

Bodyfit 200 wool long underwear bottoms from Icebreaker have many uses, from mountain biking to hiking to skiing and snowboarding. Made of soft, non-irritating merino wool, Icebreaker long underwear r...

CLOSEOUTS . The Spyder Voltage hooded thermal shirt is specially designed to provide comfortable, breathable warmth under your ski jacket without adding bulk or restricting movement. Breathable, ...

Hot Chilly’s Salsa Micro-Elite Brushed Women’s Body Fit Pants are warm, base layer pants for women. Cut with a sleek body fit, Salsa Micro-Elite Brushed pants offer plush warmth without bu...