32 Degrees Weatherproof Big Boy's Base Layer Thermal Shirt Long Underwear Set Set includes 3 items: 1 long sleeved crewneck tee shirt, 1 elastic waistband legging, and 2 pairs of complimentary hand warmers. Retains body warmth and regulates body temperature. Stretch comfort provides durability and lasting shape. Anti-odor, anti-static, quick dry, and wicks away moisture. Sizing in Weight (lbs): XS = 32-41, S = 42-59, M = 60-72, L = 73-99, XL = 100-125.