Two rubber bumpers provide additional drop / fall protection to Ubidium, these also elevate the system from the ground with the feet on the bottom side. 

The rubber bumpers are additionally designed with a curved profile on the back side to prevent Ubidium from being stood with the Water Resistant Flap facing upwards. 

When removing / installing the rubber bumpers it is important to ensure the correct orientation is used. The left and right bumpers must be installed accordingly, this can be identified by the cutouts towards the front side both top and bottom.