The spring-loaded bumper allows you to smoothly elevate and reduced your desk from a standing height to your height from the desk, table, or System on which you decide on to put the converter. And when you select to pack it up, it folds absolutely flat. Why reviewers like it: https://standing-desk-base93680.widblog.com/92777109/5-simple-statements-about-standing-desk-uplift-explained