This glow carbon fiber ring is made by 100% real carbon fiber woven, epoxy resin and photoluminescent powder. It is handmade and is trimmed, sanded and high polished to gloss finish enhances the unique look and interesting design of the fibers. The glow in the dark material can be charged with sunlight, UV light or light bulb. Just wearing it during the day will give a significant, long lasting charge. Also can charge with lamp light. As stronger the light is and the longer it’s exposed as longer lasting the glow will be. Included is a UV mini light to charge your glow ring. When charged with it for 5 – 10 seconds, the ring will glow few hours. Inspired by cycling and racing industry the ring is high-tech and luxury. This carbon fiber ring is not only incredibly durable and light but it has one of the highest strength to weight ratios. The ring is also waterproof and corrosion resistant. Standard Shipping for EU – 3-5 Business Days Standard Shipping Everywhere Else – 1-3 Weeks DHL Express Shipping – 2-3 Business Days