They protect against UV rays from the Sun, help reduce glare and reduce heat build-up of the dash . Dashboard cover is designed to be durable and long lasting.it offers 100% protection against Uv radiation, which can cause the dashboard to discolour and detriorate over time. The dashboard is made of felt fabric on top with a layer of silicone mat on the bottom for anti-slip purposes. Each pattern is tested and a laser cut to match the exact layout of the vehicle dashboard. Installation is very simple with the anti-slip backing, no adhesives are required, simply place the cover on the top of the dashboard.