Just dampen the Window Cloth and wipe. Then follow with the dry Glass & Polishing Cloth, erasing streaks for a perfect finish. Masses of microscopic fibers in the waffle-weave Window Cloth grab grime, dust, and more from smooth surfaces like windows and mirrors, as well as frames and sills — and they don't let go until rinsed. Generously sized, the Cloth swiftly handles even large windows with just a quick rinse or two. Next comes the microfiber Glass & Polishing Cloth, our secret to a satisfying, streak-free finish. Just wipe — and admire the results. Made to toss in the laundry instead of a landfill, our Window Cleaning Kit is backed by our 3-year or 300-wash promise.