the three proof cloth is a kind of plastic coated is made from woven glass fabrics and woven fabrics. Flame retardant protective clothall glass wool wove(thick)1000 or 900 *0.4MM,50M/ROLLall glass wool wove900,1000,1200,1300 *0.3mm,50m/rollalso the length is requiry by customer flame retardant protective cloth