AWARD-WINNING SUPERIOR STRENGTH AND CONTROL - Built with two stainless steel D-rings, our Double Up Collar has twice the strength and security of traditional dog collars. The two double D-rings take the pressure away from the Easy Access Buckle - which reduces the risk of popping the buckle so there is never any chance the collar with come open. RUGGED CONSTRUCTION AND MATERIALS - Dogs are incredibly tough on their collars, and our double up is engineered for toughness and comfort from the highest quality materials, it is non-rusting, and features our Soft Touch Nylon Webbing for comfort. SUPERIOR SAFETY AND FEATURES - Reflective stitching is incorporated for increased night time safety and an integrated ID attachment is included for your dog’s tags. Our Double Up Collar gives you safety and convenience and still doubles the strength with our attractive and durable double D-ring collar. VERSATILE AND DURABLE - The EzyDog Double Up Collar offers superior strength and comfort and can be used every day. It also works well as a dog training collar in conjunction with an award-winning EzyDog harness or leash. Whether your dog is small or large this double D-ring collar is still an excellent choice for you and your dog! Take your dog with you on vacation with this high-quality collar which reduces the risk of him losing his collar or breaking it off. SIZED TO FIT YOUR DOG - MEDIUM Size Double Up Collar extends from 11.5 inches to 16 inches.