Firm shape retentionSporty casual fashion (not for sports) Actual size (width/length/sleeve length): S(47/72.5/56), M(51/74.5/58.5), L(56/77/61), XL(61/79.5/63.5), 2XL(63.5/82/66), 3XL(68.5/83/6)Nude measurements: S(34-36 chest), M(37-39 chest), L(40-42 chest), XL(42-44 chest), 2XL(46-48 chest), 3XL(50-48 chest) Material: 100% ring-spun combed cotton