The AirBake Non-Stick Mega Cookie sheet measure 14 inches by 12 inches. AirBake brand has always been "The Original Insulated Bakeware". AirBake continues to provide the best baking results every time. AirBake Non-stick provides an overall enhanced baking performance with its insulated aluminized steel sheets and micro-dome technology to decrease bake times by up to 15 percent over traditional insulated bakeware. Two heavyweight aluminized steel sheets with a non-stick surface surround a layer of air. The air reduces the temperature of the metal that comes in contact with the food. The bottom sheet blocks the direct oven heat while the layer of air acts as an insulator preventing the top sheet from overheating. This means better browning, no burning and moister baked goods. Insulated bakeware means cookies won't burn and the non-stick surface means clean-up is a breeze. Do not soak and do not use if water is inside the pan.

T-Fal Airbake Non-Stick Medium Cookie Sheet, 14" x 12": Air insulation prevents top sheet from overheating which prevents burning Micro-Dome technology decreases bake times by up to 15-percent Aluminized steel with a non-stick finish No rust promise 10-Year Warranty