Size XS (CM) S (CM) M (CM) L (CM) XL (CM) XXL (CM) (A) Length 72 74 76 78 80 82 (B) Sleeve 78 80 81 83 84 85 (C) Chest girth 104 108 112 116 120 124 The measurements are the measurements of the product. If your size normally is between two letter sizes (e.g. M and L) (adults), choose the smaller one. Still thinking what's the right size for you? Let us help!