Each tray makes 55 cute mini heart ice cubes for Valentine’s Day.(around 1.5cm), size :18.5*11*1.5cm(7.3*4.3*0.6inch) Material: BPA Free 100% food-grade silicone gel,No Chemical Coatings.100% Safe for use. No peculiar smell, soft, waterproof, easy to demould, fadeless and easy to clean, durable for long time use. Microwave, Oven, Refrigerator, Freezer and Dishwasher Safe. Temperature Safe from -40 to +446 degrees Fahrenheit (-40 to +230 degrees Celsius) These silicone molds are fantastic for making: Chocolates, crayons, candles, hard candy, fondant, Jell-O, frozen yogurt treats, ice cubes with fruit juice, cake decorations, party favors for Valentine’s Day,birthdays & baby showers, and so much more!