Curved washboard / Commodity

There are still many area laundry with hand in the globe world which is indeed an arduous thing.
‘Arc-shaped washboard’ changes the normal candybar washboard into arc-shaped. Small innovation brings great convenience. On one hand, washing clothes on the arc side enlarge the friction area and then saving our effort, on the other hand, it is easier to clean and dirty water is easier to flow away along the grooves