1.Food-grade materials: The silicone ice cube tray set is made of food-grade silicone & PP materials which are BPA free, safe, and durable. Attention: Please do not wash the lid and bucket with hot water. 2.Easy to Release: This ice cube trays are made of soft silicone materials which makes square ice cubes easy to release. After taking the mold out of the freezer, open the lid, twist the tray and press the bottom of the silicone tray to release the ice. 3.Nice Shape: The silicone ice cube tray can make 24 Pcs x 0.4 Oz square ice cubes at one time. 4.Ice Cubes Storage: The ice cube tray also comes with a lid that can prevent the smell of the freezer from entering the ice. 5.Wide Application: Ideal for whiskey, cocktails, Coffee, infusing fruit or herbs. Try infusing mint for that perfect Mojito or strawberries for that delicious lemonade.