True Tray Dishwasher-Safe Silicone Mold, Makes 6 Ice Spheres, Blue, Set of 1 : Amazon.co.uk: Home & Kitchen
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True Marble Ice Cube Tray - Extra Large Square Ice Cube Trays - Dishwasher Safe Flexible Silicone - Makes 2 Inch Ice Cubes - Red Ice Cube Mold Set of 1 - Walmart.com