Freezer Refill Pack | Temperature-Sensing Breast Milk Storage Bags

Made to fit the system. Most freezer bags are designed to sit anywhere. These are made to freeze flat and slide into the Nella Vosk organiser, so your oldest-first rotation keeps working every time you top up.

A temperature check you can see. The colour-change strip gives you a quick visual guide while warming, so you're not guessing at 2am.

A fresh bag for every freeze. Each bag is pre-sterilised and used once, so there's nothing to scrub between pumping sessions. Your reusable silicone bags take care of the fridge; these take care of the freezer.

Stock up and save. The bigger the pack, the less each bag costs. Mums building a back-to-work stash usually go straight for the 90.

Made for you if...

• You already have the Breast Milk Storage System and your freezer bags are running low.
• You're building a freezer stash and want bags that freeze flat and stack neatly instead of sliding around.
• You're heading back to work and stocking up so your stash is ready before your first day.
• You pump most days, so you get through bags quickly. The 60 or 90 pack saves you reordering every few weeks.

Only need bags for the fridge? The Reusable Breast Milk Storage Bags are made for milk you'll use in the next day or two.

• 30, 60 or 90 temperature-sensing breast milk storage bags (choose your pack size)
• Colour-change temperature strip on every bag
• Write-on label for the date you expressed
• Single use, pre-sterilised, BPA-free and leakproof
• Designed to freeze flat and fit the oldest-first freezer organiser

Need the organiser, tray and fridge magnet too? Get the complete Breast Milk Storage Fridge & Freezer System. For milk you'll use in a day or two, add the Reusable Breast Milk Storage Bags.

Do these fit the freezer organiser?

Yes. They're the same bags that come with the Breast Milk Storage System, designed to freeze flat and slide into the organiser so the oldest milk always comes out first.

Can I use them without the organiser?

Absolutely. They work like any freezer bag. Freezing them flat still saves space and helps milk thaw faster. When you're ready, the complete system adds the organiser, tray and storage guide magnet.

How does the temperature strip work?

The strip changes colour as milk warms, giving you a quick visual guide. It's a guide only, so always test a few drops on your inner wrist before feeding.

Which pack size should I choose?

30 if you're topping up or pump now and then. 60 if you're pumping regularly. 90 if you're building a back-to-work stash or pumping every day. The bigger the pack, the less each bag costs.

How long can I keep breast milk in the freezer?

According to the Australian Breastfeeding Association: 2 weeks in a freezer compartment inside the fridge, 3 months in a fridge-freezer with a separate door, and 6 to 12 months in a deep freezer at −20°C. Read our full Australian breast milk storage guide.

Why single-use bags for the freezer and not reusable?

Single-use bags freeze flat to fit the organiser and give you a fresh, pre-sterilised bag every time. Reusable silicone bags are better suited to the fridge. Our guide to reusable vs single-use breast milk storage bags explains the pros and cons of each.