New and sealed! I love the Lact-aid system and used it with a three of my kids because I have IGT and can't produce enough on my own so we use this system plus donor milk. I'm selling these because my 15 month old is weaning so I won't need them. These are the 7 ounce size (not 4 ounce) and they are still sealed in plastic. There are 300 total bags.