The e-cloth Window Pack of 2 cloths removes all dirt and grime and dries windows to a sparkling finish. Excellent on glass, vinyl, wood, composites, frames and sills. Good Housekeeping Institute Approved in 2014. Removes over 99% of bacteria. 300 wash guarantee. 2-pack includes waffle style cloth to remove dirt from the inside and outside of windows and frames, and a drying cloth to leave a sparkling, smear-free finish - all just using water. Save time. Save money. Kind to you family and the environment.