This ingenious container is an innovative space saver, it can be folded inside itself to save space when not in use. It"s made from safe silicone which is heat resistant and has a cover that clips on to provide a perfect air tight seal. Product Features: Cover clips on to guarantee a perfect air-tight seal Rewritable surface Microwave, dishwasher and freezer safe 0% BPA Lifetime Warranty on all Babymoov Products