Korum Accessory Chair S23 StandardOur patented vertical leg design, now uses a rounded 23mm square leg design to make it easier to use than ever before. S23 improves the stability and leg adjustment system, whilst also making the chair much easier to use with chair accessories. The mattress is made from the highest quality lightweight materials, providing improved breathability and comfort. FEATURES Unique patented vertical leg design Fully adjustable leg system with super stable S23