Always have a clean bottle ready with the Baby Brezza 4-Pack Plastic Breastmilk Storage Bottles. These replacement milk storage bottles are thoughtfully designed to keep your breastmilk safe, secure, and ready whenever your baby needs it - whether you're pumping at home, at work, or on the go. Each bottle holds up to 10 oz of breastmilk and fits perfectly inside the Baby Brezza 20 oz All-day Breastmilk Portable Coolers. They also fit in 10 oz and 20 oz breastmilk coolers made by other brands. The slim, space-saving design nests easily inside the portable cooler ice packs, helping keep milk cold and protected wherever your day takes you. Crafted from high-quality, food-grade plastic, these bottles are PVC-free, lead-free, phthalate-free, and baby-safe, giving you total peace of mind with every pump and pour. The 100% leak-proof lids twist on and off effortlessly - no spills, no stress, and no wasted milk. Built for real life, these bottles are dishwasher-safe, freezer-safe, and microwave-safe, and can be safely used in the Baby Brezza Bottle Washer Pro or any Baby Brezza Sterilizer Dryer. Clear, easy-to-read measurement markings help you track every ounce with confidence, whether you're storing, feeding, or planning ahead. These bottles are designed for seamless feeding - when it's time to warm things up, you can simply place them straight into any Baby Brezza bottle warmer for safe, gentle heating of cold breastmilk. And they're compatible with Avent Classic nipples, so you can feed your baby directly from the bottle - no transfers required. FSA/HSA eligible. 1 year limited warranty (not valid if shipped outside the US).