Our Biothane Working Lead 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. LEAD WITH PURPOSE with the Viper Biothane Dog Leash. This robust webbed dog lead is specially coated to emerge from even the swampiest environments, dry and smell-free, without loss of flexibility. !!! NOT TO BE USED FOR TIE OUT !!! EXCELLENT PERFORMANCE: Biothane dog leash boasts a flexible substrate core bonded with a waterproof coating, perfect for environs where strength and cleanliness are crucial. It will not get stiff during extreme cold and will not melt during extreme heat. Super Heavy Biothane webbing has up to 750 lbs of breaking strength. MORE DURABLE than leather dog leashes, the Biothane dog leash boasts a flexible substrate core bonded with a waterproof coating, perfect for environs where strength and cleanliness are crucial. SOLID BRASS HARDWARE is ideal for working dogs in law enforcement or military operations. Will not rust. MADE IN THE USA from the highest quality materials, our Biothane Dog Leads come in 5 different colors, 4 width and 4 different length, ensuring that there is a suitable lead for any dog and every task.