BEVCO's new and improved sit stand promotes dynamic standing by allowing you to stand throughout the day while periodically perching upon this stool to take weight off of your legs and lower back. The upgraded 17.5" (wide) by 9" (diameter) black polyurethane seat is antibacterial, impervious to water, oil and most chemicals. The texture on the seat provides a non-slip surface that is puncture-resistant and easy-to-clean. The 11° forward tilt enables personalized adjustments for maximum ergonomic comfort. A convenient pneumatic height adjustment allows for stress-free seat height changes from 22” - 32” along with an increased weight capacity of up to 350 lbs. The expanded 27" diameter black nylon base comes standard with mushroom glides.