Anchor Ice Cube Mold - Silicone, BPA-free, Food Safe - Exclusively by Williams-Sonoma Set comes with (2) stackable silicone molds that turns ordinary water into a large (and seriously cool) anchor ice cube that won't sink your drink! BPA-free, food safe, dishwasher safe Easy to use, just fill with water and freeze. Molds ensure that the ice is released in one perfect and detailed piece, unlike regular trays which can cause ice to crack as it comes out Brings the nautical panache of a vintage yacht to your cocktail hour Functional and fun, easily creates anchor shaped ice that melts slowly and evenly so drinks stay chilled while remaining beautifully balanced down to the last sip!