These shirts come up a bit small, please go one size up if you are unsure. Chest Sizes: S/41", M/44", L/46", XL/48", 2XL/52", 3XL/54", 4XL/56" Brand: Zen Retro - Style: Basic Large Collar Front: Full button through front with large classic collar. Long sleeve with twin button cuffs. Plain back with curved hemline. No breast pocket Fabric and care instructions: 65% Poly 35% cotton. 30 deg wash. Cool iron Retro Star Style Tip: Wear with dark jeans and loafers