1.100% 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 direct contact with food, safe for drink & food making.2.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 fresh3.Removable Lid & StackableComes with removable lids for easy Stacking , also keep the ice cubes clean. It wouldnt get contaminated with other stuff in the freezer when you making baby food or other stuff. Please dont add full trays of liquids otherwise and the lid does not stay secure on tray when transferring4.Easy to Release Made of non-stick silicone that the cube mold wont break in the fridge, smooth inside and bottom wall make it easy to pop out the ice cubes5.Dishwasher SafeSmooth silicone surface make it easy to clean, they can be placed safely in the dishwasher, leaves your hands free and save your time. Pls noted that only the trays are dishwasher safe but the lids not