Deep-set, medical-grade silicone thumb grips give you full control and accuracy when it matters. Rotatable to the natural angle of your thumb position with higher elevation and larger radius ergonomic fit for precise movement and increased comfort. Key features: Designed for Xbox Precise Fit - Protects controller thumbsticks Enhanced Grip & Comfort- Increased radius for improved thumbstick and in-game control  Action Boost – provides maximum precision and accuracy