Currently, RoboVac G10 Hybrid, G20 Hybrid, G30 Hybrid, G40 Hybrid, G40 Hybrid+, G50 Hybrid, L70 Hybrid, X8 Hybrid, LR30 Hybrid, LR30 Hybrid+, L35 Hybrid, L35 Hybrid+, and X9 Pro have the mopping feature. The washable mopping clothes of the above model are mainly made of Nylon and Polyester. For X9 Pro, the material for mopping clothes is a blend of polyester and nylon, which makes up the outer layer. The inner layer is made of a sponge, which provides extra water absorbency.