Size: XS: Chest 17.7 in, Back Length 11.8 in, Recommended Weight 11–18 lb S: Chest 19.7 in, Back Length 13.8 in, Recommended Weight 20–31 lb M: Chest 21.7 in, Back Length 15.7 in, Recommended Weight 33–46 lb L: Chest 24.4 in, Back Length 17.3 in, Recommended Weight 48–62 lb XL: Chest 26.8 in, Back Length 19.3 in, Recommended Weight 64–77 lb 2XL: Chest 29.5 in, Back Length 21.7 in, Recommended Weight 79–88 lb 3XL: Chest 32.3 in, Back Length 23.6 in, Recommended Weight 88–121 lb 4XL: Chest 34.6 in, Back Length 25.6 in, Recommended Weight 132–176 lb 5XL: Chest 38.2 in, Back Length 28.7 in, Recommended Weight 176–209 lb
