Medium Solid Adjustable Soft-Padded Pet Collar with Alloy Buckle, Blue Made of duarble, tight-woven nylon Soft, comfortable cushion padding runs along most of the inner side reducing stress caused from pulling. Strong and lightweight alloy buckle Width: 5/8 (0.625) inch. Length: 14 inches (adjustable down to 11 inches in 1 inch increments) Easily sized