Maybe you’ve already done your health a favor by getting a standing desk. Now do more good by adding our High-Rise Balance Ball® Stool. Adjustable from 23” to 33” to fit most regular and standing desks, it encourages micro-movements to help firm your core and improve your circulation and posture. Micro-motion from instability strengthens core, posture and circulation Stool adjusts from 23” to 33” high to fit most regular and standing desks Stable, 360° base allows easy swiveling movement Lightweight and compact with lockable, easy-glide caster wheels Anti-burst, dome-shaped Balance Ball seat Includes easy-inflation pump Measurements: Adjustable height from 23" to 33", seat diameter of 45cm; 19.84lbs. Weight Capacity: 300lbs. Materials: PVC, PP, & Nylon. Resources: Care, Setup, & Tips.