I received Roundsquare Silicone Ice Ball Maker Mold Tray in return for my honest review. I love these ice ball cubes. They make the cutest ice balls. These ice balls are great for cooling down drinks or liquor. They don't melt as fast. This ice tray is made of food grade silicone. It's FDA approved and SGS safe. It's non-toxic and doesn't leave the ice balls tasting funny. This tray makes 4.5 cm ice balls and you can make 4 ice balls with this tray. It's simple to use. you fill up the bottom tray 3/4 of the way full, put on the top and pop it into the freezer. I like to make flavored ice balls with juice and fruit. Very yummy!! This tray is dishwasher safe and easy to clean. You can check out more about Roundsquare Silicone Ice Ball Maker @ http://www.amazon.com/ROUNDSQUARE-Silicone-Ball-Maker-Mold/dp/B00WHP81PC/ref=sr_1_2?ie=UTF8&qid=1432289697&sr=8-2&keywords=roundsquare.