Large water capacity: Smart volume design lets you mop more area at once and refill less often. Even water flow: precise water control structure ensures the mop stays evenly damp with no water stains left behind Leak-proof design: multiple sealing processes, no dripping or leaking when stationary or turning Transparent and visible: The water level markings are clear, so you can easily see how much water is inside. Easy to assemble and disassemble: One-click buckle design, can be done with one hand, simple to use