These 3-piece ice cube trays are made of PP and silicone material. Each tray produces 6 well-sized cubes, for a total of 18 cubes per set. Tray dimensions: 11.5 x 4.0 x 7.0 cm. The base of each tray is constructed with soft silicone designed for easy ice release, eliminating the need to bend or twist forcefully. Each tray includes a removable lid. This practical design helps form complete ice cubes while preventing spills, minimizing excess water freezing, and reducing the chance of ice absorbing freezer odors. The trays are stackable for neat and efficient freezer storage. They are dishwasher safe for convenient cleaning. To use, fill the trays with water, secure the lid, and place in the freezer. You can also customize your cubes by filling the molds with fruit, juice, soda, wine, or other liquids. Note: Avoid excessive twisting—gentle pressure is sufficient for ice release.