Durable, redesigned bag with a rugged 1680 ballistic nylon exterior. Features a built-in organizer within the roomy exterior pocket (fits sheet music). Bell area features a fiberboard lining for extra protection. Backpack straps are attached. Fits any bell-up model euphonium, including compensating models and those with an independent fourth valve (side mounted for the left hand). Fit bells sizes up to 13 inches. Dimensions are 27"H x 16"W x 12"D. Weighs just 3 pounds.