The POPO Slider combines an ergonomic hyperbolic design that makes it comfortable to hold and enjoyable to play with. The rippled front and back surfaces not only enhance the non-slip effect but also suggest that the POPO will continuously produce satisfying sounds while in your hand. Key Features: Hyperbolic Design: The curved shape offers a natural and comfortable grip, making it easy to handle for extended play sessions. Ripple Texture: Both sides are covered with ripples, enhancing grip while also providing a hint that the POPO will emit sound during play. Material Options: Choose between PEI and PEEK materials, each offering a unique tactile experience. Customizable Tracks: The slider comes with both dense and common tracks for different feedback intensities, allowing you to choose the feel that suits you best. Clear Feedback: When you push it, you’ll experience clear tactile feedback, enhancing the overall play experience.