This covered skillet, measuring 9.5 inch (24cm), fries three large breasts of chicken; sautes a large cluster of vegetables; or, with the lid on, braises collard greens or spinach. Beneath the diamond crystals, the pan is constructed of heavy cast aluminum, a consistent heat conductor - while its extra-thick base resists warping for cooking safely on any type of cooktop. The comfortable, ergonomically-designed handle and knob on the lid stay cool during cooking and are oven-safe to 500 degrees Fahrenheit. The tempered glass lid is clear to prevent overcooking and has reinforced stainless-steel rims for added durability. A sliding lever in the knob opens for optional venting. Swiss Diamond's revolutionary diamond-reinforced cookware outperforms cookware with Titanium surfaces by 25 percent and provides a Limited Lifetime Warranty to back up that claim. Made in Switzerland.