FEATURES
High durble  hardness fillier material in back / Seat Cushions 
High-level quality PU leather at 1.5mm thickness
Back cushion wooden supporter at 21mm thickness
Ball bearing used for all rotated Mechanism 
Stainless steel material for all fasten bolts
The frames at thickness of 6mm
3 positins adjustment on  seat 
Fixed nailing holes for machine
Aluminum knob, cap and ring
Stainless steel seat position adjusted plate for 13-positions
Handlebar build for easy moving by wheels
2H hardness for painting. Passed salt spray test more than 500 hours