Ice trays are made of high quality and premium silicone material with food grade safety, which is also certified by LFGB. The material is safe enough with BPA Free. Please be assured to use The special pattern is sure to turn heads and add a unique twist to your beverages including whisky, cocktails and chilled beverages. Keep chilling smells and tray in the freezer with the included Make lids easier. Need a lot of ice for parties or for those extra hot days? Each tray contains 37 nice sized cubes for a total of 74. Ideal for home use, parties and bars etc Turn the tray or gently prick the base. The ice cubes pop out quickly. (We recommend that you take them out of the fridge and let them sit for about 3-5 minutes. Then releasing the ice cubes will be easier). The trays can easily be washed in the sink due to the smooth silicone surface. Of course, it's dishwasher safe Not only for freezing chilled beverages, but also for freezing homemade baby food, chicken or vegetable broth, and portioning small treats like chocolates, peanut butter cups, popsicles, or anything you like want to divide into small but mighty portions 1.BPA-Free Safety 2.Compact and Fun Cube Shapes 3.2 x 37 pieces of ice made at one time 4.Easy to detach and clean 5.Widely used in daily life