The e-cloth Window Cleaning Mitt leaves glass streak-free and lint-free. It also removes grease and grime from frames & sills - inside and out, using just water. One size fits all. One size fits all and perfect for windows, frames, glass doors and carsQuickly cleans windows leaving a sparkling streak free and lint free finish. Cleans using just water, no chemicals - the power is in the fibers. Removes over 99% of bacteria. 3 Year guarantee.