It is woven by best quality texturized fiberglass yarn, treated with heatment ,has slippy surface, no damage to shin. ... (Heat Treatment) It is woven by best quality texturized fiberglass yarn, treated with heatment ,has slippy surface, no damage to shin. ... material substitue for asbestos cloth.HT800(Golden)1StructureSatin2Model of raw yarn (tex)WarpweftET9 33 4X2 ET9 33 4X2ETG 150 4/2 ...