This is a backpack-style bag designed to carry a flute and piccolo in their cases. It has a large capacity and can also store a music stand, sheet music files, tablets, etc. ======== Extracted from the following site ======== ■ Size Outer dimensions: 310(W) x 460(H) x 140(D) mm Inner dimensions: 280(W) x 420(H) x 110(D) mm ■ Weight: 850g ■ Capacity: Approximately 18 liters ■ Materials Exterior: Water-repellent matte-coated poly-canvas fabric Lining: 100% polyester ■ Main opening: Water-resistant zipper ■ Handle length: 190mm ■ Shoulder strap length: 400-800mm ■ Number of pockets Main opening x 1, Inner pockets x 3, Side pockets x 2 Flute storage pocket (C foot joint / H foot joint, piccolo, music stand compatible) Back pocket: Can store sheet music, etc.