Zwilling’s Motion cookware marries the best of Italian design with expert German engineering. The result is high-performance heavy-gauge anodized aluminum cookware with the convenience of nonstick. These lids are designed to fit pieces within the Motion cookware collection, are made of strong tempered glass, and safe for the dishwasher and oven. 10" lid fits 10" skillet, 4-qt. chef’s pan; 12" lid fits 12" skillet.