Material: double-layered fiberglass material with a non-itchy silicone coating which stands up to the temperature up to 2000℉ Large Capacity : 13.8*12.2*11.5 inches, is roomy with plenty of storage space for important documents, birth certificates,magazines and comic books. Portable & Convenienct : It has handles on top flap and both sides, easily to carry around from home to office for transporting active files. In addition, it is very portable and conducive for business, traveling, camping and various outdoor activities.