Patagonia's classic, go-anywhere all-around baselayer, made with 100% recycled content. The smooth, soft face makes for easy layering; hollow-core yarns and a grid back trap warm air, wick moisture and dry fast. HeiQ® Fresh durable odor control keeps things fresh....

Patagonia's most versatile baselayer, the Capilene® Midweight Zip-Neck has a smooth face for easy layering; a brushed-grid interior for superior warmth, breathability and wicking; and Polygiene® permanent odor control so you can wear it more and wash it less. Fair...

Made from our warmest base layer fabric, these bottoms will keep you warm even on the coldest summits. Features a covered elastic waistband, flatlock seam construction and a midrise waist.    Features Slim Fit; Natural Rise Interlock knit Wide fabric-covered...

Our best selling, and warmest base layer, just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more comfort with a pack.    Features Slim Fit Interlock knit Crew neck with set in...

Our most versatile baselayer: warm, breathable and with Polygiene® permanent odor control for daily use. Capilene® Midweight Bottoms hit the sweet spot between weight, breathability and wicking performance so you can wear these alone or under layers to stay dry...

The stretch-knit fabric allows comfortable flexibility so you can move however you want. Dawn patrol temps are quite cold, but the brushed fabric keeps you warm as you begin your ascent. FlashDry-XD technology in the material wicks sweat to keep...

An all-season favorite, wear the Merino 150 Long Sleeve as a base layer in fall or as a single layer when summer backpacking calls. Featuring Core Spun technology, we've wrapped Merino around a nylon core for added durability while still...

Need a tee that does it all and still looks good? Our freshly redesigned Merino 150 Short Sleeve works undercover as a base layer on cool mornings or as a stand-alone piece during warmer temps. Featuring Core Spun technology, we've...

There are a few places where you just don't want seams. Instead, you need an exclusive 4 Degree elite fit system, Merino next to skin for temperature and moisture regulation, and straps that provide support without digging into your shoulders....

You've got a lot of things to think about during your run. With its seamless fit and ventilation zones, this bikini won't be one of them. A wide waistband provides a comfortable, flattering fit. Features Slim Fit; Low-rise Wide covered...

The most versatile polyester baselayer with the greatest comfort range. Polartec® Power Grid™ fabric with Polygiene® permanent odor control. Fair Trade Certified™ sewing.                                   ...

LIGHTWEIGHT BASELAYER The Woolies Adventure credo is pretty simple—travel often, pack light, avoid wasting time at the Laundromat. Made of breathable, durable, odor-free 100% Merino wool, there’s a reason this baselayer is a backpack staple. Our advice: don’t leave home...