AceShot Thumb Grips (8pc) for Xbox One (One S & X) by Foamy Lizard &reg; Sweat Free 100% Silicone Precision Raised Antislip Rubber Analog Stick Grips For Xbox One Controller (8 grips) BLUE Each order comes with 4 convex and 4 concave 100% silicone sweat free grips (controller NOT included) 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