The ice cube trays in the Set of 2 Stacking/Nesting Ice Cube Trays are designed to channel water so the trays fill quickly and evenly. When not in use, these trays sit tightly together for efficient storage, but stack securely in the freezer when filled with water. Ice cube trays are dishwasher safe, as well as BPA-free and phthalates-free. Price Each. Case Pack 24 each.