It is made from a soft, durable material that allows it to stretch easily over the Drive Track unit and cling for a secure fit. Smooth to the touch, this cover not only offers shock absorbancy, but it is also designed to protect your Drive Track from dust, dirt, and moisture. Special custom cut-outs on the GS71 allow for all critical areas of the Drive Track 71 to remain fully accessible (power button, mounting grips, cooling area, charging slot, SD card slot). Additionally, the Drive Track's GPS voice command feature remains fully functions while in the cover.The GS71 is designed to allow use of our optional sun visor clip mount with the GS71 cover in place. This visor is available separately (see Visor-DT71) and will reduce glare and reflections on the Drive Track screen, allowing improved contrast and visibility.