Material : Christina violin hard shell is made of high quality carbon fiber. Sturdy, durable, and not easily damaged. This 4/4 violin case will also provide a waterproof and dustproof environment your beloved violin. Accessory Compartment : The full size violin case has 2 storage compartments for your bow, strings, bridge, rosin, shoulder rest and other accessories. With a very soft velvet lined blanket to protect fiddles well from scratches. Ergonomic Design : The vintage violin storage hard box has different colors, ring closure designed, more user-friendly, safer, tighter fit, no need to use zipper.