Neoflam 4-Piece CLOC Porcelain Food Storage Set, Green Glaze Proven airtight locking technology with four hinge lid and silicone gasket help maintain food freshness. Containers are made from high quality porcelain (BPA Free; FDA/California Prop 65 Food Contact Safe) Antimicrobial protection is built into the lids to inhibit the growth of stain and odor causing bacteria Dishwasher; refrigerator; freezer; microwave; and oven safe (up to 572 degrees F/300 degrees C) Measures Square 16oz (5.1" x 5.1" x 2.1") andRectangle 31oz (7.9" x 5.9" x 2.2").1-year limited Warranty