Reusable Breast Milk Storage Bags 320ml | Pack of 5

Built for the day, not the stash. We're honest about what these bags are for. They're working bags for the milk you'll use in the next day or two. For long-term freezing, our temperature-sensing bags freeze flat and slide into the oldest-first organiser. Use your reusable bags for the day. Use your freezer system for everything that comes next.

More room per bag. At 320ml, these silicone breast milk storage bags hold a bigger session than most reusable bags, so you're not splitting one pump across two.

Less waste, less spend. Every time you wash and refill, that's one less single-use bag in the bin. Over months of pumping, it adds up.

Part of a system made by a qualified mum. Kelly Northey is a Certified Postpartum Nutrition Professional. Every piece of the storage system was designed around how pumping actually works day to day.

Made for you if...

• You pump every day and you're tired of single-use bags piling up in the bin.
• You're back at work and sending expressed milk to daycare or a carer each day.
• You already have the Breast Milk Storage System and want more bags in rotation, so you're not washing the same two every night.
• You pump bigger volumes and need a bag that holds a full session.

Building a big freezer stash? You'll want the Freezer Refill Pack too. These bags are freezer safe, but they're not designed to fit the organiser.

• 5 × 320ml reusable silicone breast milk storage bags (pink and clear)
• 5 × slider clips for a secure seal
• Food-grade silicone, free from BPA, BPS, PVC, latex and phthalates
• Fridge, freezer and dishwasher safe

Building a freezer stash too? The Freezer Refill Pack has temperature-sensing bags that freeze flat, or get everything in the complete Breast Milk Storage Fridge & Freezer System.

Can I freeze breast milk in these bags?

Yes, they're freezer safe. They're designed for daily fridge use though, and they don't fit the freezer organiser. For a long-term stash, the Freezer Refill Pack bags freeze flat and stack neatly.

How much does each bag hold?

Up to 320ml, so a bigger pumping session fits in one bag.

How long can breast milk stay in the fridge?

According to the Australian Breastfeeding Association, up to 72 hours at the back of the fridge where it's coldest. Read our full Australian breast milk storage guide for room temperature, freezer and thawing times.

How do I clean them?

Wash the bag and clip in warm soapy water or on the top rack of the dishwasher, then air-dry fully open. Make sure they're completely dry before you store them.

Do they leak?

Each bag closes with a slider clip designed to stop leaks. Check the clip is fully on before the bag goes into the fridge or your bag.

Reusable or single-use: which do I need?

Most pumping mums use both. Reusable bags for the fridge, single-use bags for the freezer stash. Our guide to reusable vs single-use breast milk storage bags walks through the pros and cons.