Sit-Stand Series Stool promotes "dynamic" standing for those uncomfortable remaining seated throughout the workday. Meant for standing breaks, ergonomic perch encourages workplace productivity. Pneumatic-adjust offers height settings from 22" to 32" and up to 11 degree tilt. Nonslip, easy-to-clean polyurethane seat resists water, oil, punctures and most chemicals. 25" nylon base moves freely on mushroom-glide feet and supports up to 300 lb.