Set of 4 Mumi and Bubi baby food storage cubes. Make your own steamed veggies and baby food and freeze them in one ounce cubes. Easy to portion for baby. Run a little warm water over the back of the frozen tray and the cubes easily slide out when press on one side. BPA and PVC free and dishwasher safe. Slightly discolored from carrots, beets and other veggies.