The spring-loaded bumper lets you easily raise and reduced your desk from the standing height to your height in the desk, table, or System on which you choose to position the converter. And when you decide to pack it up, it folds wholly flat. Why reviewers like it: Customers like https://standingdesklegs69134.thekatyblog.com/36358730/the-2-minute-rule-for-standing-desk-long