With a slim profile and soft genuine black leather, its a perfect addition to work spaces where close-to-keyboard arm support is wanted. The ergonomic keyboard arm rest is also a great alternative to chair mounted arm rests. Unlike similar arm rests, the Teel Arm Rest features high strength steel mounting brackets to ensure a tight fit. Dont worry! The rock solid mounting hardware features strategically placed padding to ensure your desk isnt harmed by the super tight fit.