This is the first layer he should put on every time the mercury dips. It's the weight of a T-shirt, fits comfortably next-to-skin, wicks away sweat, and keeps him amazingly warm Fitted: A slimmer, more athletic cut. Dual-layer fabric with an ultra-warm, brushed interior & a slick, fast-drying exterior. 4-way stretch construction moves better in every direction. Material wicks sweat & dries really fast. Anti-odor technology prevents the growth of odor-causing microbes. Engineered elastic waistband. Inseam: YMD 23" (+- 2" per size). 57% Cotton38% Polyester5% Elastane. Imported.