I got a box of these to go along with the Ubbi diaper pail (which I LOVE). My baby is almost 5 months and I still have several bags left. They come in a roll, similar to other garbage bags. My only complaint is sometimes they tear when pulling them out of the pail. This may be more from being overfilled or from the inner pail (rough edge). If I remove the bag before it gets too fill, this doesnt happen! Although Ubbi recommends using any plastic bag in their pail, these obviously are the perfect size for the pail.