Designed for those pups who tend to slip out of traditional collars, the Ruffwear Chain Reaction Collar utilizes colorful Tubelok webbing and stainless steel to ensure you furry friend doesn't get into trouble. The martingale design helps prevents dog from slipping out of traditional collars. The aluminum V-ring and stainless steel O-ring provide reliable attachment points. The Quick Ring allows you to quickly add or remove tags, and the collar features a separate ID attachment point. 100% polyester. Imported.