Icebreaker BodyFit150 Atlas T-Shirt - Short Sleeve - Women's

Go for a trail run or a hike in your merino wool Icebreaker Women's BodyFit150 Atlas Short-Sleeve T-Shirt. The lightweight Atlas T-Shirt transports sweat away from your skin and helps regulate your body temperature.

686 Infinity Top - Women's

686 Illusion Top - Women's

Arc'teryx Rho LTW Zip Top - Women's

Soft, itch-free merino wool makes the Arc'teryx Women's Rho LTW Zip Top warm and comfortable on chilly days. This all-natural top insulates in a wider range of temperatures than a synthetic shirt.

686 Spirit Riding Jersey Sweatshirt - Women's

Burton Lightweight Top - Women's

After a day of riding in the Burton Women's Lightweight Top, you'll start to wonder why you haven't been riding in DryRide Ultrawick fabric.

Arc'teryx Rho LT Zip Neck Top - Women's

An Arc'teryx Women's Rho LT Zip Neck Top serves as an ideal foundation for backcountry travelers, with a tailored stretchy fit that caters specifically to the backcountry lady.

Patagonia Capilene 1 Scoop Neck Shirt - Long-Sleeve - Women's

The Patagonia Women's Capilene 1 Long-Sleeve Scoop-Neck is a silkweight base layer you'll wear all year.

Patagonia Capilene 2 Zip-Neck Shirt - Long-Sleeve - Women's

Stay cool in summer and warm in winter with the lightweight Patagonia Women's Capilene 2 Zip-Neck 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.

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.

The North Face XTC Lightweight Crew Long Underwear Top - Women's

Your friend was impressed with what the bamboo fibers in The North Face Women’s XTC Lightweight Crew Long Underwear Top did. So she collected the bamboo plant off her work desk and made a shirt out of it. Frankly, her shirt looks pretty uncomfortable.

Icebreaker Nature 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.

Patagonia Capilene 2 V-Neck Top - Long-Sleeve - Women's

Pull on the Patagonia Women's Capilene 2 V-neck base layer and meet your friends at the trailhead. Wicking Capilene fabric gives this slim-fit V-neck crazy breathability.

The North Face XTC Lightweight 1/4-Zip Long Underwear Top - Women's

The North Face XTC Lightweight ¼-Zip Long Underwear Top does everything in its power to help regulate your body temperature and handle odor while you hike, ski, and climb.

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

Wool in summer? Hell yeah. Pull on your Icebreaker Women’s SuperFine140 Tech Lite T-Shirt to trail run or tour a muggy city.

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

Experience a haven of warmth and comfort in the merino wool Icebreaker Women's BodyFit200 Oasis Crewe Top.

Icebreaker BodyFit200 Chakra 1/4 Zip Top - Long-Sleeve - Women's

The Icebreaker Skin200 Chakra Zip Top for women is a versatile base layer with an athletic cut and zip-neck.

Mountain Hardwear Microchill Zip-Top - Women's

The Mountain Hardwear Women's Micro Chill Zip Tee lets you continue your morning trail runs right up until the first snow.

Mountain Hardwear Power Stretch Zip Top - Long-Sleeve - Women's

Keep your routes as versatile as the Mountain Hardwear Women’s Lightweight Power Stretch Zip Top. Quick drying and moisture wicking, this performance top helps you stay comfortable.

Icebreaker Nature Lite 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.

I/O Bio Merino Contact Long-Sleeve Zip Top- Women's

Don’t hesitate to reach out and touch someone while wearing the I/O Biocompatibles Women’s Contact Half-Zip Long-Sleeve Shirt. This soft, cozy merino wool base layer keeps you feeling fresh.

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.

I/O Bio Merino Contact Crib Top - Long-Sleeve - Women's

SmartWool Microweight Zip-T - Long-Sleeve - Women's

The North Face Stretch Softwool Tee - Women's

If you’re sick of your synthetic baselayer top smelling unbearable after a day of alpine climbing or skiing, but you’re apprehensive about a full-wool top, look at The North Face Women’s Stretch Softwool Tee.

SmartWool NTS Lightweight V-Neck Long Underwear Top - Women's

Icebreaker BodyFit200 Chakra 1/4-Zip Print - Long-Sleeve - Women's

You can wear the Icebreaker Women’s BodyFit200 Chakra ¼-Zip Print Top as a ski baselayer, but it might make you sad to hide that fun print under all your layers.

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.

Mountain Hardwear Advance Lightweight Long-Sleeve Crew - Women's

Not only does the Women’s Advance Lightweight Long-Sleeve Crew use Mountain Hardwear’s Advance Lightweight synthetic fabric, but it also has channeled construction for better wicking.

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.

Under Armour Base 1.0 Shirt -Long-Sleeve - Women's

The Under Armour Women’s Base 1.0 Long-Sleeve Crew Shirt wicks away moisture and circulates your body heat to keep you from clamming up in cold conditions.

Ibex Woolies Crew Top - Women's

Throw out your synthetic long johns and make the switch to merino wool with the Ibex Women's Woolies Crew Top. This lightweight, long underwear top gives you super soft, temperature-regulating insulation.

Patagonia Capilene 1 Graphic Scoop Shirt - Long-Sleeve - Women's

From sunrise surf sessions to afternoons at the crag, the Patagonia Women’s Capilene 1 Graphic Scoop Shirt features a fully recycled polyester construction that manages moisture and some artsy graphics to keep you looking fresh.

Patagonia Merino 4 Classic Zip Neck Shirt - Long-Sleeve - Women's

On the skin track up and the epic turns down, the Patagonia Women’s Merino 4 Classic Zip Neck Shirt lets its moisture-wicking, odor-fighting, insulating capabilities really shine.

SmartWool Microweight Crew Top - Long-Sleeve - 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.

The North Face Fusion Top - Women's

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.

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.

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

This limited-edition version of the Women's BodyFit200 Oasis Crewe features a design that Icebreaker modeled after the structure of Kiwi snowflakes.