SKINOWN Pack of 8 Pairs/16 Pcs Replacement Silicon Thumb Grip Caps for PS2/PS3/PS4, Xbox 360/Xbox One Controller Made from high quality silicon, comfortable and durable; Accurate and sensitive design, enable you perfect playing experience. Easy to install - just turn the caps inside-out and then pop over the sticks. Special and unique design. 4 Pair of white can light in the dark. 4 Pair of black cannot light. Add extra grip and comfort to your game play and prevent your fingers from slipping. 30-day money-back guarantee for any reason, 90-day warranty for quality-related issues, free user support.