Coated in silicone to insulate and hold up under extreme conditions. Prevents fraying & encases seams to make them over 4 times stronger. Thick layer of silica insulation keep heat in turbo shield and turbo housing. Silica has a low thermal conductivity making one of the best insulators. Stainless steel, glass fiber & silicone adds to insulating and thermal properties. Increases seam strength, durability and insulation value. Stainless Steel fabric holds up against the highest temps. Will not break down or become brittle with heat.