The unique Thermo-Spot heat indicator lets you know when your pan is pre-heated to the right temperature to seal in the flavor and moisture of your food. Solid, ergonomic stay-cool handle. Oven safe up to 350 F. Hard enamel exterior and tempered glass lid to monitor food while cooking. T-FAL Armaral base. Embedded copper disk ensures fast and even heat distribution. Base is 20 times more resistant to warping than ordinary bases and eliminates hot spots to provide superior cooking results.