This is a set of 3 Medela microwave sterilizing bags. I am selling 3 bags as I have 3 left over from a pack of 5. Ideal for sterilizing baby bottles, breast pumps, pacifiers, sippy cups, etc. when traveling or visiting family. They have creases because they were stored in the original box after purchase. Although they are new and unused, please understand that they have been stored at home.