Shoei RF-900 Motorcycle Helmet  yellow DOT SNELL APPROVED  JAPAN MADE           SORRY  TO SAY  i DONT SEE THE SIZE OF HELMET  ON IT ?   ..  WHERE DO I FIND THAT .. IT LOOKS  LIKE A MEDIUM  TO ME .. BUT  IM NOT SURE ..   TELL ME HOW TO FIND THE SIZE ?  THANKS     AS SHOWN ..  PRE OWNED AND USED ..  SOME SCRATCHES   ENLARGE PHOTOS FOR  BEST DESCRIPTION   AND  ASK QUESTIONS IF NEEDED ..  THANKS    LINING HAS GONE BAD    NOW  REDUCED PRICE   NEEDS TO BE TAKEN OUT OR REPLACED  LINING .