The size & shape of the ice you use plays a key role in how drinks taste. Small ice cubes may melt faster and will therefore dilute your drink. Bigger is better so drinks stay well-chilled and beautifully balanced down to the last sip. Your cocktail or 'Whisky Neat' will also look Super Grand and Very Impressive. INSTRUCTIONS Simply fill the ice tray to the top and place it on a flat surface in the freezer. Once frozen, push down on either side of the tray in an opposite direction to loosen. Push each cube out from the base with your thumb. TIP: Use cooled boiled water for crystal clear large cubes. Features: 4 Large ICE Cubes4.7cm CubeFood Grade Silicone , 100% BPA free, non-toxic Size 11.2 x 11.2 x 5cmSturdy, flexible silicone molds release ice cubes quickly and easily.Flexible for easy filling, release, and cleaning.Safe for dishwasher & freezer.Easy to fill, remove & clean.