SIT, PERCH, STAND! The perfect seat for your standing desk. Supports your weight, takes the load off your legs and gives you a rest from standing by letting you perch. This chair will help improve posture and strengthen the body’s core throughout the work day. Adjustable height and gently-rounded base lets you sit comfortably but keeps your body moving so your mind stays focused and on task. Seating height adjusted with 360° Actuator Ring to between 21.5” and 32”. A patented anti-roll safety ring on the gently-rounded base prevents tip-overs and falls. Antimicrobial protection. Lifetime warranty. Plastic Parts Made in USA. Assembles easily in 5 easy steps and is made of durable, recyclable plastic and a steel piston and base. Suggested height 5'4” to 6'7” and a desk/table height of 30” to 48” Maximum weight is 350 lbs.