Universal Compatibility: Designed to perfectly fit leading smart rings including Oura Ring Gen 4/3, Samsung Galaxy Ring, Ultra Human Ring AIR, RingConn 2/1, and Amazfit Helio. Eliminates the hassle of mismatched sizing tools, making it a versatile solution for multiple devices. Tip: Don't cover sensors or charging port. The ring works well if they're unblocked.

Customizable Fit with 2 Thickness Options & 3 Colors: Choose the right size for your needs: 0.5mm Transparent for minor looseness (nearly invisible) or 1.5mm Black/Skin Tone for moderate looseness (secure grip). The low-profile design sits discreetly inside your ring, keeping the original sleek look without adding bulk.

Secure Grip Technology: Engineered with a non-slip material that creates a snug fit between the ring and your finger, preventing shifting or sliding during workouts, daily activities, or sleep. Keeps your smart ring in optimal position for accurate health tracking. Invisible Aesthetic: Crafted with a low-profile design that sits discreetly inside your ring, maintaining the original look of your smart ring without adding bulk. Virtually undetectable to the eye, ensuring your device remains sleek and stylish. Easy Application & Longevity: Tool-free installation takes seconds耀imply attach to the inner ring surface, then press for 30 seconds to ensure a secure bond. Made from durable, skin-safe material that resists wear, sweat, and daily use, maintaining effectiveness even with frequent ring removal.