About this item Round Back Seat Cushion: Sponge filled in PU leather, Inner diameter: 14.6in; backrest height:13in; overall width:25.2in, easy placement, Loads 300lbs. Height Adjustable Chair: Remove the plastic cover from the metal cylinder, seat height range: from 17.7in to 24in. New Plastic Wheels made for a smooth, quiet ride over the floor. Sturdy plastic base:22in in diameter. FEATURES: Waterproof, easy to maintain, pretty look. Simple installation steps: one person can complete the installation.