100% Food Grade Silicone These ice cube trays are made of food grade Silicone which is BPA free and non-toxic, feel soft and comfortable, they can contact with food directly, safe for drink & food making. Multi-purpose Ice Tray Suitable for families, parties and bars! You can use these cube molds to make ice for coffee, whiskey, make kids chocolate snacks, homemade butter confectionery or baby food. Whats more, keep the seafood freshRemovable Lid & StackableComes with removable silicone lids for easy Stacking, prevent spills and keep ice cubes from absorbing freezer smells when you making baby food or other stuff. Please DONT add full trays of liquids otherwise the lid does not stay secure on tray when transferringEasy to Release Made of non-stick silicone these cube mold wont break in the fridge, smooth inside and bottom wall make it easy to pop out the ice cubes. You can wait a while or run warm water over inverted tray with cover on to loosen cubes for easily pop out the cubesDishwasher Safe Both the trays and the lids can be placed safely in the dishwasher, leaves your hands free and save your time. The Smooth silicone surface could be cleaned easily