Arc'teryx Rho LTW Bottom - Women's

The Arc'teryx Rho LTW Bottom for women is a super-tech Merino/lycra base layer.

I/O Bio Merino Contact Tight - Women's

Whether you’re headed to shred the mountain or just down the street to the office, the I / O Bio Merino Women’s Contact Tight keeps your chilly bottom-half warm.

Patagonia R1 Fleece Pant - Women's

Pull on the Patagonia Women's R1 Pant as your first line of cold defense for skiing, ice climbing, winter camping, or drafty cabin living.

I/O Bio Merino Contact Loose 3/4-Length Tight - Women's

The I/O Biocompatible Women’s Contact Loose ¾-Length Tights have a loose fit for comfort and three-quarter-length legs so you don’t have to tolerate bunching in your boots.

686 Illusion Bottom - Women's

Patagonia Capilene 1 Bottom - Women's

The slim-fit Patagonia Women's Capilene 1 Bottoms give you lightweight insulation for chilly hikes, climbs, and ski days, and they do it all with 100% recycled materials.

Mountain Hardwear Microchill Pant - Women's

The Mountain Hardwear Women's Micro Chill Pants provide comfortable insulation for any cold weather sport.

Icebreaker Nature Ultralite Legging - Women's

Icebreaker made the Nature Ultralight150 Leggings with merino wool, which works hard to maintain your body's natural temperature.

The North Face XTC Lightweight Tight - Women's

If you need lightweight long johns that won't get sweat-soaked and smelly during your hardcore ski sessions, look to The North Face Women's XTC Lightweight Tights. The Bamboo Charcoal technology blocks odors and increases moisture management.

Icebreaker BodyFit200 Legless Bottoms - Women's

Icebreaker made the Women's BodyFit200 Legless Bottoms for skiers and snowboarders who don't want extra layers underneath their boots.

Icebreaker BodyFit150 Legging - Women's

Pull on your slim-fitting Icebreaker Women's BodyFit150 Leggings and a shell, and get on the trail. Whether you cross country ski or climb a fourteener, these merino wool Icebreaker long underwear bottoms don't let you get clammy or cold.

Marmot Lightweight Bottom - Women's

The Marmot Women's Lightweight Bottom holds in just the right amount of heat to keep you warm (but not too warm) on winter trail runs and cross country ski trips.

Ibex Woolies Bottom - Women's

You've put in the time with your itchy synthetic long underwear. Treat yourself with the 100% merino wool Ibex Women's Woolies Rib Bottom.

Icebreaker Nature200 Lite Legging - Women's

The Icebreaker Women’s Nature200 Lite Legging sports a lower cut at the waist so sexy that you may think twice about covering up this base layer at all.

Mountain Hardwear Advance Lightweight Boot Length Tight - Women's

SmartWool NTS Lightweight Long Underwear Bottom - Women's

Wear the SmartWool Women's Lightweight Bottom for cool-weather aerobic activities or as a next-to-skin base layer.

Icebreaker Icebreaker GT180 Strider Tight - Women's

Pull on the Icebreaker Women’s GT180 Strider Tight for a cool morning jog in the mountains.

SmartWool Microweight Bottom - Women's

Wear the SmartWool Women's Microweight Bottom for cool- or warm-weather aerobic activities or as a next-to-skin base layer.