I did not need it before you see it in my friends and me the offer. As our baby bottles can not be prepared more than 1 hour in advance, we prepare doses and dosing keep this box. Very, unwanted to go faster and avoid mistakes in the night, in the 1st month of the baby. Also more convenient to carry than milk box. Personally I bought 2, and have seen the most expensive suite (+ 1) in supermarkets, so no regrets