The Lodge GL10 tempered glass skillet lid locks moisture and flavor in cookware while allowing cooks to keep an eye on the progress of their recipe. Made of durable tempered glass, the unit has a heat-resistant silicone knob. It is designed to be used with Lodge's 101⁄4-inch-diameter cookware, from Dutch ovens and skillets to chicken fryers. After use, it can be cleaned in a dishwasher.