THE RING - This particular ring boasts a modern flat band, slight comfort fit and a matte finish. The inside of the ring has a beautiful purple sparkle that is smooth and extremely comfortable. Made with carbon fiber twill and composite for the sparkle. This ring is 100% Carbon Fiber and has a metallic grey reflective color when in the light. • PROPRIETARY NASA TECHNOLOGY IN EVERY RING - Having decades of experience with carbon fiber and composites, we invented a unique process for NASA that we use in every Core Carbon Ring made. The process allows for an extremely strong, lightweight, comfortable, and truly unique ring. • HANDCRAFTED IN THE UNITED STATES - Each ring is professionally and individually handcrafted on the Space Coast of Florida. • SATISFACTION GUARANTEE - We want you to be completely satisfied with your new ring. If you are not for any reason, please contact us. We will be happy to exchange until the ring is a perfect fit or refund you for your order.