I tried the WAIU portable breast milk cooler and it’s a smart, travel‑friendly solution for nursing moms. The triple wall vacuum insulation really does its job, milk stays cold for hours, even without constant access to a fridge. The included storage bottle and ice pack fit neatly inside, making it easy to keep everything organized. I like that it’s compact enough to slip into a diaper bag, yet durable with its stainless steel build.

I wish i would have gotten this sooner. Its a copy cat of the Momcozy version but less bulky (I think). This hold 9 ounces and keeps your milk cold for 15hrs. I only used it for 8hrs so far and it did amazing. Its slim and not super heavy. Perfect for when I am pumping at work or if we have a day out with the kids and I need to take some milk for the day. It was easy to unscrew and wash.

This breast milk cooler will be good for times I need to pump when I'm on the go. It looks like a water bottle, so it's not totally obvious that it's a bottle of breast milk, and it fits in a cupholder too. The bottle holds a little over 9 ounces (9 ounces marked, plus just a little over that), so while that's fine for what I'd produce during the day, if you've got a large supply you may fill one of these quickly if you're using it for that.