1. Nonstick silicone: Silica gel for reliable, flexible strength; offers easier release compared to stiff plastic trays, simply twist to separate ice from the mold. 2. Versatile: Each tray creates 4 ice squares; can also be used to make frozen pudding, cake, biscuits, chocolate, and more. 3. Non-slip design: Sits securely on a countertop or table for stay-in-place convenience. 4. Easy care: Cleans easily by hand (not dishwasher safe); refrigerator-, freezer-, and microwave-safe; stackable for compact, space-saving storage. 5. Tray dimensions: 4.25 x 4.25 x 1.77 in (L x W x H). Color: Black Material: Silica gel Size: 11.5 x 11.5 x 5 cm Package contents: 4 x Ice square trays. Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3 cm.