Yamaha cases are precisely molded to each instrument to provide a snug fit and prevent jarring. This case is specifically for the YMP-204M Mellophone, although other models may fit. The case is made from wood and covered in durable vinyl. Our cases use riveted metal hinges and latches, which are very durable and easy to operate. They are much less prone to breakage compared to our competitor's molded hinges and latches.