[Tight fit and Removable Lid] Tight fit and Removable Lid To avoid diluting the flavor and being contaminated in the refrigerator, we use removable lids maintain the best pure and Fresh Flavor . [Food Grade Silicone Ice Molds] Our ice trays are made of high quality materials, food grade silicone, and bring green health to your home. [Easy Release] Compared with stiff plastic ice trays, our flexible mold are made of silicone, which is dishwahser safe, flexible non-stick silicone material and cavity design easier to release large , Simply get out by pushing the bottom without bending or twisting. [ Ice Shape] Our ice trays have a hollow cylinder design, which makes the ice larger than the ice grains and has a smaller contact , which greatly reduces the melting speed of the ice and makes the cooling longer.