We make this design with a unique carbon fiber. We call it carbon camo but it's proper name is filament wound carbon. It has a unique, stealth, urban camo appearance and looks like a really cool ring during the day, with a pop of side color on the side. We use the carbon camo on the inside of the ring as well.
This design is 10mm wide or just a hair over 3/8". Please order 1/2 size larger than your normal ring size if you typically wear a more narrow band.