Features:100% brand new and high quality.Great for kids as sticky juice doesn't dribble down their arms as the lollies meltEach container comes with it's own silicone cap.They can be filled and laid on their side in your freezer， or stand upright wedged amongst other freezer foods. This means you can shove them in almost anywhere unlike upright lolly mould sets.How to Use Your Ice Ball Molds:Before using your new tray， be sure to wash to wash thoroughly with soap and waterFill the bottom tray nearly full of water (leave about 1 cm unfilled)Then set the bottom tray on an even surface in your sink and press the lid tray down into the bottom tray until it is sealed (Note: The excess water will escape through the 4 vent holes at the top of each ball)When full， gently press down on the top of each mold to force out enough water to give a slight air gap at the top of each ball for expansion - This step is important so your ice balls will form properly without cracking - Need to leave room for expansionDo not worry about excess water in tray. Let it freeze with the moldLay flat in freezer for 5+ hoursSpecification:Material: Non-toxic siliconeColors: Black， White， BlueSize: approx. 11.5*11.5*4.5cm/4.5*4.5*1.8"(L*W*H)Net weight: 130gPackage Included:1 * Ice Balls Maker Mold