Rolled Round Leather Blue Dog Collar Soft Padded 7 Sizes Miniature to Large breeds (13-16 inches.Reference 3505) Size XXXS reference 2226 Length 9.5 inches First hole at 7" and the last hole at 8.2" Size XXS reference 2240 Length 11 inches First hole at 8" and the last hole at 10" Size XS reference 2241 Length 14 inches First hole at 10" and the last hole at 13" Size S reference 3505 Length 17.5 inches First hole at 13" and the last hole at 16" Size M reference 3506 Length 20 inches First hole at 16" and the last hole at 19" Size L reference 3507 Length 23 inches First hole at 18" and the last hole at 21.5" Size XL reference 3531 Length 26 inches First hole at 21" and the last hole at 25"