Men's Merino Pants100% Australian Merino Wool 210 gm m2 Superwashed for softness and shrink resistance Merino is the lightest, softest and warmest wool Naturally water, sweat and smell resistant Durable and comfortable crotch design (perfected over 10 years) Leg length is cut longer than normal For a next to skin, tighter fit order 1 size smaller Machine Wash and Dry (2% shrinkage) 6' model wearing small, 6'4" model wearing medium