32 Degrees Men's Long Sleeve Crew Neck Base Layer 2 Pack, NWT, Black Very soft, anti odor, and quick dry fabric Special fiber content retains body warmth Stretch yarns that maximizes comfort and fit Various Sizes: S = 34-36, M = 38-40, L = 42-44, XL = 46-48 40% Polyester, 34% Acrylic, 22% Rayon, 4% Spandex