Breast Milk Storage Bags


An easy-peasy, space-saving way to store breast milk after expressing.


Order before 2pm for next working day delivery.

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  • We’re biased (of course) but the best breast milk storage bags help you stash your milk away safely and securely after pumping. Our robust milk bags hold up to 200ml breast milk each and have been designed, with space-saving in mind, whether you store them in the fridge or freezer.

    Made from BPA-free plastic, they’re completely hygienic for storing and defrosting milk. And, with space on the front to date each bag, you’ll be able to keep track of what you pumped and when.

    Each handy bag is resistant to snags and tears and comes with a clever, leak-resistant zipper at the top, preventing any mishaps. Thanks to their shape, they can stand up on a surface, making it a total breeze to decant your milk, whether you’re using a Wren hands-free electric breast pump or any other.

    Top tip: Storing your milk? Keep the bags in your fridge's icebox for 2 weeks, or pop them in the freezer for up to 6 months.

    • 15 bags per pack
    • Holds up to 200ml breastmilk each
    • Use after pumping
    • Suitable for the fridge or freezer
    • Food-grade, BPA free
    • Quick to use

  • Shipping & Delivery

    If you place an order before 2pm we will endeavour to try and dispatch the same working day, however  if this falls on a weekend, it could be a little longer. See more about our shipping policy.

    Returns & Exchanges

    Accepted for up to 14 days on all products that are unopened and unused. See our full returns policy.

  • Protect by warranty

    We’ll replace faulty products within 6 months of purchase

    See our full warranty policy

    Customer service is at the heart of what we do here at Wren. We want to help you on the journey. If you have any questions pre or post purchase, do not hesitate to get in touch with us at or drop us a DM over on Instagram.


  • Wren’s breast milk storage bags are made from food-grade plastic and are BPA-free, making them a safe, hygienic and easy way to store milk before feeding it to your baby.

  • Fly over to The Nest to find out about the proper way to store breast milk and defrost it safely for your baby.

  • While you can store breast milk in bottles or other containers, our storage bags can be a useful and convenient way to store milk if you pump fairly frequently. There’s space on the front to jot down the date and time you pumped, so you don’t lose track of which milk to use next - and the slim design allows you to store milk in the fridge or freezer without taking up too much space.

  • Wren’s milk storage bags come in packs of 30. Depending on how often you pump, you’ll go through them at different rates. If you’re expressing milk once a day, each pack should last a month. If you’re collecting milk to store more frequently, you may prefer to buy more than one pack at a time.

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