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. Internal neck tape for added comfort; locker loop for hang drying Set-in seams and underarm gusset promote a wide range of motion Minimal, low-bulk seams reduce chafing and increase comfort over extended wear Thumb loops made from the same fabric as the shirt body, for secure hand coverage. Minimal branding at left front hem. Fits next-to-skin without being compressive for optimal wicking, easy layering and freedom of movement Made in a Fair Trade Certified(TM) factory, which means the people who made this product earned a premium for their labor Weight 93.55 g (3.3 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