Puppy Bumpers UBD710 Ultra Blue Digital Puppy Bumper Up to 10in For Dogs up to 10" Dog's own collar threads through loops to keep it in place "With so many people keeping small dogs in upper-floor apartments, this is one products that really could save a life." ~ Dr Marty Becker, Good Morning America ULTRA PUPPY BUMPER are made tough for extra active dogs. Heavy duty, washable, cotton twill can withstand a lot of hard play! The neck loops are made of strong belting so the Ultra stays securely on your pup, yet is as easy to use as the regular Puppy Bumper.