Luxury full-grain American leather martingale style dog collar with fine European steel. Made in the USA Measurements: XS: 1/2"W, 12"L; R: 22"-26" Small: 5/8"W, 14"L; R: 9"-12" Medium: 7/8"W, 20"L; R: 12"-15" Large: 1"W, 22"L; R: 15"-18" XL: 1"W, 24"L; R: 18"-22"