"1. Strong, supple, reflective kernmantle rope 2. Two rope sizes: 11 mm diameter (large) or 7 mm diameter (small). Both sizes are 5 ft long (1.5m) 3. Strong and secure locking carabiner 4. Comfortable, easy-to-hold tubular webbing handle 5. Convenient accessory loop for pickup bags or small clip-on items The Ruffwear Knot-a-Leash™ is a rugged, climbing-inspired rope dog leash with carabiner. It uses strong, supple kernmantle rope and a secure locking carabiner. Reflective rope keeps dogs and humans visible in low-light conditions."