The Primos Double Bull Swivel Chair with a sturdy two piece design with and adjustable height of 18-21". The chair features 360 degree range of motion; four adjustable legs for added stability; collapsible back rest with shoulder strap for easy carry; oversized feet that pivot to any terrain and a collapsible design with shoulder strap. The seat width is 19.5" and the seat back height is 19.25".