Our flexible and removable bollard was born from the pain of replacing removable bollard that were constantly being hit and damaged by vehicles. This unique design features a sleeve that is concreted in-ground to give stability and security. The steel stem contains a 10mm thick steel spring under compression just above the locking mechanism.  A tension is applied to the spring such that a single person will have difficulty in flexing the bollard more than a few degrees.  When hit by vehicles, the stem will flex and the driver will know that they have hit something. The bollard will return to the vertical position after the vehicles moves away. It is not designed for high security access control, but for applications where standard removable bollards are being hit occasionally.