SUPERIOR STRENGTH & STRETCH: Lansinoh's breastmilk storage bags are designed to expand with your milk as it freezes, for stronger, more reliable milk storage FAST FREEZE & THAW DESIGN: Lansinoh breast milk storage bags freeze flatter than leading competitors so you can store more breastmilk and thaw super-fast. Efficient and uniform thawing protects your breastmilk nutrients SAFE BREASTMILK STORAGE: Our storage bags are presterilized, made without BPA or BPS, and designed with a tamper-evident, fully sealed tear-away top for safe milk storage SUPER STRONG & DURABLE: Each Lansinoh milk bag for breastmilk has reinforced double sealed seams on the side and bottom, plus double zipper for ultimate protection SAVE 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 bra COMPACT STORAGE: Lay flat to safely freeze and maximize milk storage; Stand in the fridge for compact, easy storage, or pour into baby bottles. Lay flat design helps optimize space inside breast milk storage bags freezer CONVENIENT 100 COUNT PACKAGE: This package includes 100 breastmilk storage bags with 6 ounce capacity each, providing ample supply for your baby feeding and milk storage needs