GLEEN, combined with the power of water, safely and effectively cleans hundreds of surfaces. This unique 16 x 16 inch cloth effortlessly cleans windows, mirrors, marble countertops and more, with only water, for a streak free gleam. No need for expensive sprays, harsh chemicals or paper towels. Just dampen GLEEN with water, wring it out and experience easy cleaning, every time. The patented fiber technology leaves behind absolutely no streaky residue or scratches and cleans the following materials: glass, ceramic, chrome, plastic, marble, fiberglass, stainless steel, leather, granite, acrylic, vinyl, wood, porcelain and aluminum.