Sometimes your controller is not (well) under control. It can not do any harm to provide the thumb joysticks with the joysticks on the gamepad. These mounting plates offer you more grip and comfort. They also protect the controller against sweat and wear due to intensive use. This package from manufacturer Trust contains two styles of silicone caps (soft or firm) in different colors. It is so nice to give the controller a personal touch. The thumb grips are easy to apply and easy to clean.