You have finally found one of the most versatile insulated bags around, said to have over 1000 uses! It's great for bottles of breastmilk or formula, and can be used later for the child's lunch box, portable game systems (Gameboy or DS and game cases), snacks in the car or plane, or things kids collect at home or on vacation (shells, rocks, anything fun). Keep it handy... I am sure you will find many other uses for it. Makes a great gift for any age, and it can hold extra gifts inside (and even a small card).