This unique design has an innovative switch mechanism, which holds the ice cubes securely in place until required. Simply fill with water just like a conventional ice tray and freeze. When ice is needed, simply twist the tray to loosen the cubes and then push each switch on the reverse to release one ice cube at a time - effectively snapping each out of its individual compartment. This allows you to only release the amount of ice cubes you really need, whilst the rest remain securely in the tray and can be placed back in the freezer. It includes a flexible lid that prevents water spills and tainting from freezer odours and also enables you to stack more trays on top of one another. Freezer and dishwasher safe.