Transform your desk into an ergonomic “Sit to Stand” work area, and take advantage of the health and productivity benefits of working while standing up. Kantek's Desktop Sit to Stand Riser helps to reduce back pain caused by hours of sitting, and improves energy and focus. This desktop riser adjusts effortlessly from sitting to standing position with a built-in pneumatic mechanism, and offers unlimited height settings up to 20" from desk. No assembly required. Kantek is a leading manufacturer of quality computer accessories, desk accessories, and more, providing innovation, quality and value since 1982.