Swan Men's Fleece-Lined Crew Neck Long Sleeve Thermal Tops Microfiber thermal top with brushed fleece-lined interior Crew neck, long sleeve and fitted--to keep maximum warmth in the cold Great as outerwear, under base layer (long johns), or sleep/lounge wear A definite must-have, a won't-go-wrong present for men of all ages 35% Cotton, 55% polyester, 10% spandex Made from a blend of 88% Polyester and 12% Spandex. Available in sizes S, M, L, XL, and 2XL. Machine wash, tumble dry low.