Kinetic Go Green Glassworks Premier Series 8-Piece Round Glass Container Set with Vacuum Seal Lids includes 4 Containers and 4 Lids 55021 BPA Free and FDA Approved Set includes 4 Round Glass Containers and 4 Plastic Lids: 1-10oz, 1-29oz, 1-56oz, 1-103oz Simple touch Vacuum Seal Plastic Lid with airtight and watertight silicone seal 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.