Thank you for viewing. This is an OGK Kabuto helmet, model "FLEX-AIR". The color is matte black gunmetal, and the size is S/M, fitting head circumferences of 55-58cm. I used it for about six months. There is no history of crashes. There are a few scratches from use, but there are no problems with its functionality. The chin strap has been trimmed slightly. Please note that it can be adjusted within a general range. The original box, instruction manual, and other accessories are included. The required size input is "S size", but this product is "S/M size" (it was not available as an option). Please confirm. If you have any questions, please feel free to ask.