The Doggie Walk Bags Gray Bones Duffel Dog Poop Bag Holder is soft waste bag holder that dispenses bags on a roll. Includes one roll of 12 tie handle poop bags, that can be refilled with any roll of bags. The duffel attaches to any leash, belt or collar using the hook-and-loop strap or metal carabiner clip. After you have picked up after your dog, clip the bag to the carabiner and keep your hands free.