Rolled Dog Collar Puppy Leather Soft Padded Round XS S M L XL Sizes (Red, 7-8.2 inches.Reference 2226/2230) Size XXXS ref # 2226. Width 1/4" (6 mm). Length 9.5 inches. First hole at 7" and the last hole at 8.2" Size XXS ref # 2240. Width 1/4" (6 mm). Length 11 inches. First hole at 8" and the last hole at 10" Size XS ref # 2241. Width 1/4" (6 mm). Length 14 inches. First hole at 10" and the last hole at 13" Size S ref # 3505. Width 1/3" (8 mm). Length 17.5 inches. First hole at 13" and the last hole at 16" Size M ref # 3506. Width 3/8" (10 mm). Length 20 inches. First hole at 16" and the last hole at 19";*** Size L ref # 3507. Width 1/2" (13 mm). Length 23 inches. First hole at 18" and the last hole at 21.5";*** Size XL ref # 3531. Width 1/2" (13 mm). Length 26 inches. First hole at 21" and the last hole at 25".