AceShot Thumb Grips (8pc) for Xbox One by Foamy Lizard174; Sweat Free 100% Silicone Precision Platform Raised Anti-slip Rubber Analog Stick Thumb Grips For Xbox One Controller (8 grips per order)

Each order comes with 4 convex and 4 concave 100% silicone sweat free grips
Convex right stick for enhanced precision & improved accuracy while aiming
Concave left stick for grip and comfort which reduces hand and thumb fatigue
Perfect for Halo, COD and pretty much any FPS
Quickly mount over existing new or worn analog thumbsticks