High engine bay heat can be a particular problem with turbocharged or supercharged cars. So Aeroflow Performance has this under bonnet matting insulation to protect exterior surfaces and blocks heat convection. Consisting of a 5.5mm thick layer of insulating foam which is a flame-retardant polyester fiber fabric that is rated up to 207-DegreeC (405-DegreeF). A pressure sensitive and heat resistant adhesive layer that can easily conform to most bonnet shapes. It is easily cut with a sharp knife and once installed with the application roller leaves a wrinkle free finish.