Mila's Keeper Glass Breast Milk Storage Bottles come in two (2) sizes, standard and wide neck*, to accommodate different size pumps and nipples. Make sure you know which neck size is the right storage bottle for you. 
*Special Note: Our bottles are compatible with original manufacturer pump parts only - adapters from other manufacturers are not guaranteed to fit. (i.e. Maymom generic brands wide necks may not fit unless you use the sealing ring that comes with the flanges)
** Evenflo wide bottles have recently changed their threading - see here. Our bottles fit the threading of the current nipple cap ring, not the new. Please check before purchase or use a compatible cap ring with their nipples.
The wide mouth of this size also accommodates milk poured from wearable, hands-free breast pumps such as Freemie, MomCozy, Elvie, and Babyation.
Volume: 5-6 ounces | 150 ml
Weight: Standard: 6.2 oz; Wide: 6.8 oz
The MilKeeper- Insulated Breast Milk Cooler Dimensions: The MilKeeper can fit one ice pack and one 5 ounce/150 ml glass storage bottle by Mila's Keeper. The cooler may fit breast milk storage bottles such as Medela and Spectra. Please check measurements before purchase to ensure the bottle fits the cooler.
The MilKeeper can alternatively fit 2 breast milk bags such as Lansinoh with 6 ounces each.
Important Note: With the cold pack inserted, the MilKeeper can fit a bottle of maximum diameter of 2.5 inch (63mm) x 4 inch height (105 mm).
