Dense "Ultra-Fine" quality fiber removes more dust, dirt and bacteria than conventional cleaning products. Advanced hook-and-loop backing holds-up under harsh laundering conditions and attaches pads more securely. Durable pad construction, third party tested tough, withstands more than 300 launderings. Double finished edges retain pad shape with use over time. Use for dusting only. Do not use wet. Handles are strong, lightweight and corrosion resistant.