Men's / Unisex Size Waist (in) Chest (in) XS 28-30 34-36 S 30-32 37-39 M 32-34 39-41 L 34-36 41-43 XL 36-38 43-45 2XL 38-40 46-48 3XL 40-42 49-51 4XL 42-44 52-53