Onepalace 2 Pack Silicone Thumb Grip Cap for Sony Playstation 4 Controller Bue High quality silicone thumb stick grip cap cover for PS4 Controllers Enhance your gaming experience with these simple concave grip add-ons. Accessory Only, Controller is not Included. These thumbstick grips are must for any gamer to ensure your thumbs do not slip during gameplay. Easy to install - just turn the caps inside-out and then pop over the sticks.