quality material: Made from foodgrade polycarbonate (PC). Splashproof design protects your microwave interior and makes cleaning easy. Heat resistant up to 200C to safe hygienic heating and to prevent splatters while keeping meals clean. Doublefunction shield: Acts as a contaminantblocking barrier to keep food fresh in the microwave. When not in use for heating, it serves as a reliable dust shield with a secure seal for bowls during storage or meal prep. Antidry design: Includes antidry and overflow features with a rotatable vent to optimize steam release. Balances humidity levels so meals cook evenly and you avoid dried edges or overflow. Enhanced control: Provides precise, consistent heating with a transparent design for realtime monitoring. Built for heat resistance and easy, ergonomic handling during use. Use scenarios: Reheating leftovers: Place the cover over a bowl to prevent splatters while you watch progress through the transparent lid; adjust the vent to control steam and keep food moist. Steaming vegetables or reheating sauces: Use the rotatable vent to manage steam release for evenly heated results without overflow. Storing meals or bowls: After cooking, seal with the cover to protect contents from dust and maintain freshness in storage or during meal prep.