Bags On Board offer this economical pack of refill bags to fit in all Bags on Board dispensers. Contains 21 rolls with 15 bags per roll. These leak proof bags are designed to safely and easily dispose of your pet's waste. Pet waste pick up is a necessity. For responsible pet parents who make it a habit to enjoy the freedom of the outdoors, Bags On Board provides strong, reliable solutions that make the job a lot less yucky.