Microfiber mop head uses an intuitive locking-clip system: press the locking clip switch downward to loosen and remove the cloth, insert one end into the fixed clip, spread the cloth flat, tuck the other end into the movable clip and push the switch upward to secure. For paper towels or wet wipes, lay flat, place mop head in center and tuck edges into the fixing holes. Precautions: do not pull the cloth forcefully; align mop head and handle before use; tighten the handle only until secure.