The Ultra Glass and Polishing Cloth removes light grease and dirt such as finger marks, plus over 99 percent of bacteria. Used dry on a damp surface (such as after cleaning with the e-cloth General Purpose Cloth), it rapidly dries all shiny surfaces to a brilliant, streak-free finish. It's brilliant on windows, glass, mirrors, stainless steel and chrome. Guaranteed for 300 machine washes. 50 x 40cm. 80 percent polyester, 20 percent polyamide. Keep away from fire. Always read label.