Our dog collars feature unique, durable fabric, quality hardware, and a strong nylon core. They're machine washable and made to last: * Reinforced stitching at all stress points for added strength * Strong nylon webbing core that can withstand even the strongest pullers * Heavy duty welded d-ring ensures a secure attachment to your leash * All of our products are sewn on an industrial sewing machine * Handmade in Southern California * Choose from several different buckle colors to make your collar truly unique SIZES: Our collars come in a variety of widths and sizes to ensure the perfect fit. If you need a custom size, please let us know in the "instructions" box at checkout. Tiny (3/8" wide) 7" - 11" X-Small (1/2" or 5/8” wide) 8” – 12” Small (3/4” wide) 9” – 13” Medium (3/4” or 1” wide) 12” – 19” Large (1” wide) 15” – 24” X-Large (1” wide) 17” – 28” CARE: Hand or machine wash using a gentle detergent. Lay flat to dry.