Hey mamas, the Breastmilk Storage Bottle Standard Neck set makes collecting and storing breast milk a breeze! These 5pcs. BPA-free, 5 oz polypropylene bottles come with lock-tight sealing lids, ensuring your milk is safely stored in the fridge or freezer. They're dishwasher and freezer-safe for easy cleaning, and can even double as feeding bottles, offering great versatility. A convenient and reliable choice for storing your precious breast milk!