Each cooler will hold up to the volume of milk advertised for each size (Milkify Mini: 30-40 oz., Milkify Medium: 100-120 oz., Milkify Medium Plus: 150-180 oz., Milkify Stash: 220-250 oz., Milkify Stash Plus: 270-300 oz.). The exact amount of milk that you will be able to fit in the cooler may vary by 15-20%, and is largely dependent on several things: the volume of milk in your bags, the type of bags you use, and how the bags were frozen. In order to maximize the space in the cooler we have found that the most efficient packing is done with bags that are frozen completely flat and filled with 5 oz. or less.
Our minimum volume guarantee: If you send less than the minimum of the advertised range for the size you ordered, we will issue you a prorated refund at $1.62/oz.