Special Note: Sizing is based upon the Dogs Actual Neck size, NOT the size of their collar or the weight of the Dog. Glow Pups high visibility Puppy Bumpers® make it easier to find your pup in the dark while keeping him inside the fence. Made of brightly colored safety fabric with additional reflective piping around the edge. Glow Pups shine with even the slightest light source. Glow Pups Puppy Bumpers® are machine washable and tumble dry low. All Puppy Bumpers are made in the USA. So What Exactly is a Puppy Bumper? It is a stuffed collar (filled with polyester fiberfill so they are light but firm) that resembles a relaxing travel pillow (for humans) used to prevent puppies and small dogs from squeezing through fences, balconies, and gates. Small dogs and puppies can be safe and stylish because Puppy Bumpers come in a variety of colors and fabrics. There is even a gold "bling" Puppy Bumper for the dog that likes to stand out in a crowd. Puppy Bumpers attach to the dog's collar with soft loops Cotton covered stuffed collar is comfortable and non-toxic Feels similar to a regular collar dogs dont mind it Made in the USA by a special needs charity Keep your puppy or small dog from squeezing through fences, deck rails and balconies. Light, comfy and stylish, this “pillow” attaches to your pet’s collar with 5 grosgrain collar snaps. Polyester Material with polyester fill; machine wash/dry low