Solid Seat * Blow-molded plastic seat and back with textured finish * Seat platform slides smoothly over polished  high-strength aluminum tubes * Rust-proof  all aluminum construction * Adjustable in height to fit both user needs and bathtub wall clearance * Easily supports bathers weighing up to 400 pounds * Strong suction tipped legs prevent movement on wet surfaces * Height adjusts from 18.75  - 23