Brake fade caused by overheating brake fluid (often called Pedal Fade) can also be reduced through the use of thermal barriers that are placed between the brake pad and the brake caliper piston, these reduce the transfer of heat from the pad to the caliper and in turn hydraulic brake fluid. Some high-performance racing calipers already include such brake heat shields made from titanium or ceramic materials. However, it is also possible to purchase aftermarket titanium brake heat shields that will fit an existing brake system to provide protection from brake heat. These inserts are precision cut to cover as much of the pad as possible. Since they are relatively cheap and easy to install, they are popular with racers and track day enthusiasts.