686 Illusion Top - Women's

Terramar Silkweight Scoop Top - Women's

Beware of the lightweight, microfiber polyester in the Terramar Silkweight Top.

Icebreaker Nature 200 Haven V-Neck Top - Long-Sleeve - Women's

Wear the Icebreaker Women's Nature Lite Haven V-Neck Top by itself or as your baselayer.

Icebreaker BodyFit 200 Chakra 1/4-Zip Top - Long-Sleeve - Women's

Icebreaker makes the BodyFit200 Chakra ¼- Zip Top for Women from superfine merino wool, and the result is everything you could want in a long-sleeved base layer top.

Icebreaker Nature Ultralite Sweetheart Top - Short-Sleeve - Women's

When you need a bit of extra warmth while in the mountains, bring the Icebreaker Women's Nature Ultralite Sweetheart Top.

Icebreaker Nature 150 Sweetheart Top - Long-Sleeve - Women's

With a low neckline, pigment print, and slim fit, the new Icebreaker Women's Nature Ultralite SweetHeart Long-Sleeve Top has style you rarely find in long underwear.

Kombi Pro-Line180 1/4 ZipneckTwo Tone Top - Women's

The Kombi Pro-Line 180 ¼ Zipneck Two-Tone Top is so striking, you’ll hate to cover it up.

Backcountry.com Merino Bliss Lightweight Long Underwear Top - Women's

With its soft, naturally odor-resistant 18-micron Merino wool knit and ½ neck zip, our Backcountry.com Women's Merino Bliss Lightweight Top covers you in functional comfort, minus the synthetic funk factor.

SmartWool NTS Lightweight Zip Top - Women's

The SmartWool Women's Lightweight Zip-Top ain’t your grandma’s itchy wool undergarment—it’s a smooth, soft, lightweight baselayer that outperforms even the most techy synthetic top.

Marmot Lightweight Zip-Neck Shirt - Long Sleeve - Women's

Marmot made the new Women's Lightweight Zip Neck Long Sleeve Shirt with quick-drying Polartec Power Dry material and funk-fighting Cocona performance treatment so you can hit the trail harder without smelling like your socks.

SmartWool Lightweight V Top - Women's

Pull on your SmartWool Women's Lightweight V Long Underwear Top before you pitch your tent and make dinner.This lightweight base layer keeps you warm as the sun sets at your base camp.

Stoic Merino Crew Shirt - Long-Sleeve - Women's

Toss all your synthetic base layers in the trash and opt for the funk-fighting, moisture-managing Stoic Merino Crew Shirt this season.

Marmot Lightweight Crew Shirt - Short-Sleeve - Women's

The Marmot Women’s Lightweight Crew Shirt wicks moisture and fights odors from the ski hill to the mountain trails.

Backcountry.com Merino Crew Shirt - Long-Sleeve - Women's

Uncompromising in both quality and form, our Backcountry.com Women's Merino Long-Sleeve Crew Shirt offers the superior moisture managing, naturally anti-odor, and comfort of super-fine New Zealand Merino at a price that might make you pee a little.

Kombi Bamboo 4-Way Stretch Crewneck Top - Women's

Kombi’s Bamboo 4-Way Stretch Crewneck Top for women weaves bamboo fibers into a high-tech base layer.

SmartWool NTS Lightweight Top - Women's

SmartWool especially designed the Women's NTS Lightweight Top to go next to your skin.

Patagonia Wool 2 Zip-Neck - Long-Sleeve - Women's

Go for a trail run over lunch in the Patagonia Women's Wool 2 Zip-Neck base layer, and then head back to work without a shower.

SmartWool Microweight Crew - Women's

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

Icebreaker SuperFine140 Flight T Lite T-Shirt - Short-Sleeve - Women's

Who wears wool in summer? Sheep do. And you will too, as soon as you try on your Icebreaker Women’s SuperFine140 Flight T Lite T-Shirt.

Icebreaker BodyFit200 Oasis Crewe-Fleur - Long-Sleeve - Women's

Think the design on the sleeves of the Icebreaker Women's BodyFit200 Oasis Crewe-Fleur is just fleur-de-lis pedals? From a distance, that's what it appears to be.

SmartWool Lightweight V Top - Women's

Pull on your SmartWool Women's Lightweight V Long Underwear Top before you pitch your tent and make dinner.This lightweight base layer keeps you warm as the sun sets at your base camp.

SmartWool Lightweight Zip Top - Women's

The Smartwool Women’s Lightweight Zip Top is not only an ideal first layer for winter, but thanks to the porous nature of wool fibers this garment breathes exceptionally well and dishes out total comfort in warmer temps as well.

Icebreaker BodyFit 200 Tank - Women's

The Icebreaker Women’s BodyFit 200 Tank fits smoothly, and its soft fibers and flatlock stitching eliminate any itch or chafing.

Icebreaker Nature Lite200 Vista Top - Long-Sleeve - Women's

The delicate prints on the Icebreaker Women’s Long-Sleeve Nature Lite200 Vista Top make it much more than a wicking merino base layer.

Stoic Merino Bliss Shirt - Long-Sleeve - Women's

With its soft, naturally odor-resistant 17.5-micron Merino wool knit and ½ neck zip, the Stoic Women's Merino Bliss Lightweight Top covers you in functional comfort, minus the synthetic funk factor.

SmartWool Microweight Crew Shirt - Women's

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