BEVCO's sturdy construction and modern design of the Versa backless stool is ideal for a wide range of applications, including general office, medical, laboratory and factory. The 14" diameter, 2" thick black polyurethane seat is antibacterial, impervious to water, oil, and most chemicals. The non-slip surface is puncture resistant and easy to clean. The pneumatic height adjustment allows for stress-free seat height changes from 16" - 21". The stool features a sturdy 25" diameter black nylon base. Model comes with dual wheel hard floor casters.