SUPER STRONG & DURABLE - With reinforced double-sealed seams and zipper to help protect against leaksSUPERIOR STRENGTH & STRETCH - Our breastmilk storage bags are designed to expand with your milk as it freezes, for stronger, more reliable milk storageFAST FREEZE & THAW DESIGN – Our breast milk storage bags freeze flatter than leading competitors to save time and preserve nutrientsCOMPACT STORAGE- Lay flat to safely freeze and maximize space with breastmilk storage bags freezer solutions, or stand upright in the fridge for easy access and convenience when pouring into baby bottlesSAVE TIME - Pump directly into the bags using your Lansinoh breast pump or most major breast pump brands using our pump-into-bag adapter (sold separately) and your pumping braSAFE BREASTMILK STORAGE - Presterilized milk storage bags breastmilk essentials are made without BPA or BPS and designed with a tamper-evident, fully sealed tear-away top for safe milk storage