Extra large and extra strong dogs require a leash with super duty strength. The KONG Ultimate leash can withstand the toughest pullers, and its rugged design is built to last. It features a soft grip handle, 16ft color coordinated belt with reflective stitching, and an intuitive brake + lock mechanism that works with you and your dog's natural walking motions. Like all KONG products, you can depend on these retractable leashes for durability and strength walk after walk.