Thermal Men Underwear T-shirt. Long sleeve. Round neck. Smooth fabric. Elastic band over the cuffs for greater fit. Garment that fits perfectly to the body. Composition: 50% Acrylic, 50% Polyester Care: Hand wash at max temperature. 40º. Do not use bleach. It does not allow the use of a dryer. Iron at max temperature. 130º. Do not dry clean.