Heart ice have 21 cavities in total. Easy to fill with any liquid with no spill. Operating temperature ran from -104℉ to 446℉ . Heart ice cube tray is made of silicone and pp material. Non-sti blue silicone for easy release and qui cleanup Easy to use,with just a little push from the bottom or simply twist the tray to t the cubes out. Staable and do not take up a lot of space Silicone heart has a lid which is easy to attach and ss spilla in the freezer,also keep the food fresh and from continat A cute heart ice tray for making heart shaped ice cubes,candies,jello shots,baby food,crayons and all other heart shaped treats Tips: the ice trays are silicone,so not ridd like plastic trays. We sest to put it on tray or use the lids as a base to transfer filled trays to freezer,then as covers once heart ice cubes are set.