Aluminized Norbest 918™ Coat A unique blend of carbon and Kevlar®, Norbest 918™ 18 oz aluminized fabric offers maximum protection against heat, sparks and molten metal splash. Aluminization on the fabric provides excellent reflective heat protection up to 2950 degrees F. The 45" long Norbest 918™ Coat also features a 12.5 oz green whipcord back, snaps down the front and at the wrists.