Compatible with Coredy R500,R550(R500+),R750 robot vacuum cleaner, ideal for wet-dry clean and mop hardwood floor, high traffic rooms, large rooms or small rooms, maintaining your home gleaming every day Made of 100% environment friendly microfiber material, washable and reusable Easy to remove and replace for routine maintenance Recommend replacing the cleaning mop cloth every 2~4 months Package include 2PCS replacement mop cloths, each cleaning cloth is 4.5” x 11”, authentic accessories manufactured by Coredy