Kinetic Go Green Glasslock Plus Series 4-Piece Round Food Storage Container Set Includes 2 Containers and 2 Lids 72102 BPA Free and FDA Approved Set includes 2 Round Glass Containers and 2 Plastic Lids: 1-27oz, 1-59oz Patented locking 4 tab lid with silicone seal helps food stay fresh up to three times longer. Oven safe up to 450 Fahrenheit without the lid. Microwave safe without lid attached. Refrigerator and freezer safe. Dishwasher safe, top shelf recommended for lid. Environmentally friendly Spillproof, shatter resistant, oven safe, dishwasher, microwave, freezer and refrigerator safe Silicone gasket locking system and impermeable polypropylene containers keep out oxidizing Patented manufacturing processreduces odor and staining and is BPA and FDA approved