Patagonia&';s most versatile baselayer wicks sweat and provides balanced warmth in a wide range of winter conditions. It&';s smooth for easy layering, stretchy and soft next to skin for all-day comfort, and keeps you warm in cool to cold conditions. Made in a Fair Trade Certified(TM) factory. High-bulk, low-weight yarn and double-knit construction produce a high warmth-to-weight ratio with breathable, sweat-wicking performance across the widest range of temperatures and conditions; with a smooth face for easy layering Classic crew styling with internal neck tape for added comfort and a locker loop for hang drying Raglan shoulder seams and full underarm gussets minimize chafing and allow total freedom of movement Thumb loops made from the body fabric provide secure hand coverage; minimal branding at the left-front hem 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 Made in a Fair Trade Certified(TM) factory, which means the people who made this product earned a premium for their labor Weight 167.26 g (5.9 oz) Fabric 4.1-oz (140-g) 100% recycled polyester dot-joint double knit with a wicking finish. Made in a Fair Trade Certified(TM) factory