Live Un-leashed. This unique collar is engineered with a built-in retractable leash housed within the collar. The quick access and convenience is perfect off-leash activities. Revolutionize your off-leash activities with the RadDog all-in-one collar plus leash. Designed for the mostly off-leash dog, this unique collar features a built-in 36 in retractable leash. Perfect for walking, running, hiking, car trips, heading to the vet and more, this collar is the ultimate companion for your adventure dog. Available in a variety of sizes to fit nearly any dog, this collar is made of durable nylon fabric and features a high-quality retractor, side-squeeze buckle and metal D-ring. When you need a quick-use leash, all you have to do is grab the handle and pull. Release the handle and the leash will automatically retract, letting you and your pet get back to your off-leash activities.