The Ubbi Plastic Bags are an option for the Ubbi diaper pail, although not a requirement. Depending on your need, you can choose between a single box of 25 bags or a convenient triple value pack of 75 bags. Each unscented bag has a capacity of 13-gallon and is made of 20% recycled material. These plastic bags aren’t a must, just a plus! Enter the world of Ubbi where innovative products are designed and created with parents and children in mind.