Body Glove Pet Double D-Ring Neoprene Collar Double D-Ring Neoprene Collar is Strong and Durable with Neoprene and Strong Webbing to Provide Twice the Strength of Traditional Collars Stainless Steel Double D-Rings Take Pressure Away from Buckle Closure and Dogs Neck for a Comfortable Walk/Run for the Dog and Owner Easy On/Off Buckle Closure, Soft Webbing and Adjustable Strap for a Form Fitting Collar Small Collar Measures - Inch Wide, Medium/Large Collar Measures 1-Inch Wide Match with our Body Glove Pet Neoprene Leash