Made from food grade natural silicone. Safe and can stand temperature from -20 - 250 Degree Celsius. Freezable, microwavable and can be use with sterilizer. Perfect way to store your first baby food or ingredients. Varity of food storage, baby food, toddler's snack/fruit or mother's cooking ingredients! Each tray can store 18 ounces of food or 3 ounces / cube with clear measurement marking. Recordable & Clip-on lid design. The food, once frozen, can be easily retrieved because the silicone tray is very flexible. Each mold comes with induvial adorable face design