Features: Made of high-quality silicone, non-slip, non-toxic, and odorless, which can protect your controller from scratches and external shocks. Special technology used to increase the friction between the finger and controller. Prevent finger slippage, reduce thumb, wrist and hand fatigue, and improve accuracy and sensitivity during the game. The thumb grip button makes your controller stand out from the crowd, with a novel, novel appearance and unique appearance, making it unique. Wear-resistant and durable. Precise design, no need to modify, completely suitable for your controller, to provide you with the most complete game fun. Simple application takes only a few seconds, no need to worry about sweaty thumbs; Specifications: Material:Silicone Size:Approx.5x5x2cm/1.97x1.97x0.79in Suitable for Pico 4 VR Controller; Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 8pairs Rocker Caps