One sachet from any of 800g or 600g packs fits snugly inside, and can be stored for up to three weeks. Please clean the milk box thoroughly before using it for the first time. Please do not put the box in the dishwasher!. For hygiene reasons, do not pour the milk powder directly into the milk box, but rather place it in the original resealable bag. Container comes with scraper edge and spoon holder. The box is made of polypropylene / polyethylene. Size 125x95x205mm. The practical, resealable HiPP milk box is ideal for storing milk formula.