The EzyDog Neo Collars are made from soft, comfortable Neoprene material (as used in wetsuits) and are reinforced with nylon webbing for added strength. - Waterproof, soft Neoprene material provides added comfort and eliminates chafing - Offers increased nighttime visibility - Includes ID Clip This completely waterproof collar features a stainless steel D-ring that doesn't rust. This collar features easy to clean material, with a quick release buckle, relfective piping for increased visibility at night and a hook and loop adjustment. End uncomfortable chafing for your dog with this revolutionary dog collar design! EzyDog EzyDog Neoprene Collar - Red: X-Large - (Fits Necks 21"-24") #EZY11114 - Nylon Dog Collars.