Rolled Round Leather Red Dog Collar Soft Padded 7 Sizes Miniature to Large breeds (18-21.5 inches.Reference 3507) Size XXXS - ref # 2226. Width - 3/8". Length - 9 ". This collars will fit 7"- 8 1/5" dog's neck. *** Size XXS - ref # 2240. Width - 3/8". Length - 11". This collars will fit 8"- 10" dog's neck. Size XS - ref # 2241. Width - 3/8". Length - 14". This collars will fit 10"-13" dog's neck. Size S - ref # 3505. Width - ". Length - 17 1/2". This collars will fit 13"-16" dog's neck. Size M - ref # 3506. Width - 5/8". Length - 20". This collars will fit 16"-19" dog's neck. Size L - ref # 3507. Width - ". Length - 23". This collars will fit 18"-21 " dog's neck. *** Size XL - ref # 3531. Width - ". Length - 26". This collars will fit 21"-25" dog's neck.