With these Lansinoh Breastmilk Storage Bags, you can easily store and freeze your pumped breast milk. These 100-count Lansinoh bags are pre-sterilized so that you never have to worry about safety. Each bag has a patented Click n' Secure seal that prevents spills and leaks. All of the bags are BPA and BPS free to keep your infant safe. You can connect the Lansinoh breast pump directly into each bag for simple breast milk transfer.We will gladly combine shipping when more than one item is purchased.