Viper Biothane Working Dog Collar + Built-in Handle - Stainless Steel Hardware. Our Biothane Working Dog Collar with Handle is created from a high-quality Biothane waterproof coated webbing. A trusted name in national sports leagues as well as international military and space organizations, Biothane has a flexible substrate core that is bonded with a durable waterproof coating for protection. It is durable, cleanable, and has proven durability in applications where safety, cleanability, flexibility, and strength are crucial. Features top grade solid stainless steel metal hardware, a strong and easy to grip handle, and is black in color. Available in widths 1 1/4" and 2", and in lengths 14-16",16-20", and 20-25". Measurements are listed from buckle to the first hole and from buckle to the last hole.