NAKA Wave handrail

The wave-shaped handrail with a unique curved shape is a new type of stair handrail created based on ergonomics.
 It can be used as a handrail when going up the stairs. You can easily apply force by grabbing the vertical part.
 It can be used as a crutch when going down stairs. Grasp the horizontal part and hold the handrail firmly with only a small grip force.