Although the Ubbi diaper pail does not require special refill bags, the Ubbi line does have its own branded eco-friendly plastic bag options. Depending on your need, you can choose between a single box of 25 bags or a convenient triple value pack of 75 bags. Each bag has a capacity of 7-gallon (26L) and is made of 20% recycled material. These eco-friendly plastic bags aren’t a must, just a plus!