Patagonia&';s lightest and fastest drying baselayer for minimalist warmth management in cool conditions. It wicks and releases moisture in a flash, and feels silky next to skin. Keeps you warm in cool conditions. HeiQA(R) Mint odor control keeps things fresh. Made in a Fair Trade Certified(TM) factory. Features Lightweight and highly moisture wicking, so you stay dry, warm and comfortable. Ultralight, perforated-elastic waistband dries in a flash and comfortably layers under your winter kit Gusseted crotch for unimpeded mobility Minimal, low-bulk seams reduce chafing and increase comfort over extended wear Fits next-to-skin without being compressive for optimal wicking, easy layering and freedom of movement Lightweight stretch fabric is easy to wear; minimal branding at left-front hem Made in a Fair Trade Certified(TM) factory, which means the people who made this product earned a premium for their labor Weight 99.22 g (3.5 oz) Fabric 2.3-oz (78-g) 100% recycled polyester double knit with HeiQA(R) Mint odor control and a wicking finish. Fabric is certified as bluesignA(R) approved. Made in a Fair Trade Certified(TM) factory