In-bottle Formula Dispensers fit inside a 9 floz bottle to save space for daily trips out of the house and traveling Measure up to 8 scoops of dry formula in advance, then make up baby's bottle when you need it Saves space: The formula dispenser fits perfectly inside baby's bottle and protects formula from spilling Safe & Hygienic: Mixing on demand eliminates the risk of the milk spoiling Baby safe: BPA-free and phthalate-free