Ikea White/Red - 365+ Food Saver 7x7x2 (5 Pack) Leak-proof lid protects the contents from frost damage and prevents spills, making it ideal for both transporting food and storing leftovers. Valve in the lid and rounded corners ensure even warming in the microwave. Several food containers can be stacked on top of one another to save space in fridge and freezer. Several empty food containers can be stacked inside one another to save space in your cabinets. BPA free.