When you’re pumping and storing breast milk, the last thing you want to see is your precious liquid gold spilling all over your counter or freezer. The best reusable milk storage bags are made from durable, food-grade plastic or silicone (never BPA, or anything with the recycle symbol number 7), and have features that make them easy to use: wide openings that make them easy to pump or pour from, a double-zipper seal that’s easy to close and doesn’t leak, and labeling space to write the date and quantity.

You’ll also want to consider whether you plan to pump directly into the bag or use it with a bottle, and if you’re using a wearable breast pump, which isn’t compatible with all bags. Finally, price might be a factor as you purchase the large quantity of bags you’ll need during the baby’s first year.

Hundreds of moms love the extra-thick, BPA-free, re-usable storage bags from Dr. Brown’s, which can hold up to 6 ounces of milk each and are self-standing. They also have a double-zipper closure, which many find to be the most reliable. They’re more expensive than most other options, but many women feel the investment is worth it to reduce their waste. Another option that’s a little more affordable is Junobie’s reusable breastmilk storage bags. They’re made of silicone, which is less likely to leach than plastics and are a great choice for moms looking for a zero-waste alternative to single-use plastic.  best reusable milk storage bags