Hygienic because it drains well and does not absorb water.
In addition, it is excellent in durability, lightweight and workability.
The entire bottom surface is perforated, and low ribs (plate shape erected perpendicular to the surface to reinforce the flat surface) are installed on the outer periphery, and the bottom surface is raised.
The part that touches the ground is only the tip of the outer rib, so it is hard to get dirty.