Portion, store, freeze, heat and serve home-cooked baby meals. Baby Blocks are airtight, watertight and leakproof for safe storage and spill-free outings. Blocks fit into the freezing tray, and multiple trays can be stacked to save space in the freezer. Clear lids and bodies allow you to see whatÕs inside, and measurement markings make portioning a breeze. 4 oz capacity.