Kinetic brings you stylish innovation by introducing the Go Green Glassworks series of food storage containers! FDA approved, BPA-free plastic lid with a silicone seal provides an Airtight & Watertight seal. Stain and odor resistant. Microwave safe (lid may be used as a splatter guard only, flip lid upside down so tabs face microwave ceiling). Top rack dishwasher safe. Safe for freezers and refrigerators.