Made with quality heavy nylon, woven ribbon, a strong buckle, and a welded D-ring. It is intended for medium to large dogs. This is handmade, sewn in Maryland. Caninedesign started as an Etsy shop. We are proud to make the jump to Amazon Prime. With over 1,800 five star reviews on Etsy, we're sure you will be happy with this product. We take pride in our craftmanship and quality. Collars are machine washable. Lay flat to dry.