20pcs Colorful Silicone Thumb Stick Joystick Grip Analog Controller Cover Cap For Sony PlayStation PS4 PS3 Xbox 360 Xbox One Game Accessories Replacement Parts Enough to keep your fingers from slipping; Add a little extra grip and comfort to your game play; Thumb Grips For Sony Play Station 4 PS4 PS3 Xbox One; Along with the silicone caps, you will have the extra leverage and precision you crave; Please note that only the white caps are luminous which can glow in dark.The black caps are not luminous;