The Zeus Volt Neon EDGE Ring is for those who train with maximum voltage. The Groove Zeus™ ring is 3 rings fused into 1–the ultra-durable outer band, a patented nylon band concealed inside that does not allow the ring to stretch but still breaks, and the most breathable inner band Groove has ever created. What Makes It Awesome: ANTI-STRETCH TECH - Flexes for comfort, holds its shape, but safely breaks away under pressure. MAX BREATHABILITY - No more sweaty finger - inner grooves allow air in and moisture out. PREMIUM MATERIALS - Crafted from medical-grade, 75-durometer silicone. TRAVEL READY - Comes standard with a premium metal travel case. The Groove Zeus™ rings are ‘pre-relaxed’, so they will not loosen up after being worn regularly. If you are between 2 ring sizes for a Zeus go with the next size up! Groove Life. Ready for adventure™.