Medela Breastmilk Storage Bags 25s

The Medela Breastmilk Storage Bags are single-use bags for collecting, storing, freezing and transporting expressed breast milk, supplied here in a pack of 25. If you're pumping and need somewhere hygienic to keep milk for a later feed — whether that's for a caregiver, a shift at work, or building up a small supply — these breast milk storage bags give you a straightforward way to portion, label and freeze milk without taking up much space.

Each bag is designed with double walls and double zip protection to help guard against leaks, and the seams are heat-sealed to resist tearing, splitting or cracking. The bags stand upright while you're filling them, then lie flat once sealed so they're easy to slip into the fridge or freezer. They're BPA free, and the pack comes with a transport pouch printed with illustrated instructions to help you use them confidently while you're out and about.

Freezing and labelling

The bags are freezer-proof and have a date panel on the front, so you can note when each portion was expressed and work through your oldest milk first. Fill each bag only up to the 180 ml mark — like all liquids, breast milk expands as it freezes, so leaving that headspace matters. The flat shape stacks neatly in the freezer and helps the milk thaw more quickly when you need it.

How to Use

1. Wash your hands thoroughly with soap and drinking-quality water, then dry them with a fresh or single-use paper towel before handling the bag.
2. Try not to touch the inside of the bag.
3. Fill the bag up to the 180 ml mark, and complete the date panel on the front.
4. Seal the bag and lay it flat for storage in the fridge or freezer.
5. For transport, keep the bags in a cooler bag with ice packs for periods of up to eight hours.
6. To thaw frozen milk, thaw it inside the bag.

Best For

The Medela Breastmilk Storage Bags are a good option for parents who:

• Express milk and want a hygienic, single-use way to store and freeze it
• Need to transport milk to a caregiver, crèche or workplace
• Prefer flat-lying bags that stack and defrost easily in a small freezer

They may not suit you if you'd rather use reusable containers you can wash and refill, since these bags are intended for one use only.

Disclaimer

These bags are intended for single use only. Do not reuse a bag, as this could cause cross-contamination. Do not fill past the 180 ml mark, as breast milk expands when frozen. Storage and handling of expressed breast milk should follow your own healthcare guidance.

Pandylane Pro Tip: Fill in the date panel before you seal each bag rather than afterwards — it's far easier to write on a bag that's still standing upright and empty at the top than one that's already flat and cold.