Chew Proof: 16ft Retractable dog leash with 2 heavy duty wire ropes designed to resist chewing. The lengths of the two wire ropes are 19.5in and 27.5in. The fabric portion of the leash is not chew resistant. Dual Dog Leash: Designed for walking, running, or training two dogs simultaneously using 2 heavy duty wire ropes. Heavy Duty Internal Coil: Durable internal coil spring ensures reliable retraction performance over several years. Suitable for large dogs up to 110 lbs. One-Handed Brake, Pause, Lock: Features a simple locking mechanism with quick lock and unlock functionality for easy one-handed operation using your thumb. Ergonomic Anti-Slip Handle: Retractable dog leash includes an ergonomic anti-slip handle for comfort during extended use. Includes a convenient D-ring for attaching accessories such as poop bags or keys.