Back Button Enhancement: The back button protection skin is made of silicone material, which increases the thickness of the back buttons (there are two different thicknesses of 1mm/2mm) and adding anti-slip textures making it easier for you to touch the back buttons during use. Trackpad Protective: The protecive skin have improves the touchpad's tactile feel,aims to improve grips and optimize gaming experience and extends its lifespan. Joystick Caps: Prevent your fingers from slipping and relieve thumb fatigue, protect your joysticks from dust and scratches, resulting in more precise in-game movements. Data Transmission Adapter: This L-Shaped Type-C adapter allow the cable to have a suitable extension direction, protect your charging cable form being bent and broken. Set Contains: 2x Touchpad Stickers, 4x1mm Back Button Silicone Stickers, 4x 2mm Back Button Silicone Stickers, 1x L-Shaped Type-C Adapter, 4x Rocker Caps.