All you have to do is hold the bottle or frozen bag of milk under cool and then warm water for a few minutes. (mypregnancyguide.com)
You may need to grab milk quickly before dropping off your baby at daycare, or your nanny may be managing a hungry baby while trying to find the oldest bag of milk. (lovingmomentsbras.com)
You just lay the newest bag of milk on the metal tray up top until it freezes, then pop it into the slot on top of the stack inside the storage unit. (thespruce.com)