【Secure Grip Design】The AMVR 4SHS1 features a unique anti-slip knuckle strap design for PICO 4 Ultra controllers, preventing accidental drops during immersive gameplay. 【Unobstructed Signal Transmission】Made with highly transparent materials, the strap doesn't interfere with infrared signal points, ensuring uninterrupted controller functionality. 【Adjustable Comfort】Equipped with adjustable magic tape straps, this accessory comfortably fits most hand sizes, reducing hand fatigue during extended gaming sessions. 【Easy Battery Access】The thoughtful design allows for battery replacement without removing the entire controller cover, enhancing user convenience. 【Premium Materials】Crafted from high quality materials, ensuring durability and a premium feel that matches the original controller. Specifications: Model: 4SHS1 Compatible with: PICO 4 Ultra Materials: PC, Silicone, Zinc Alloy, Copper, Stainless Steel, PU Leather