UZO1 SPORTY BACKPACKS WITH STEREO SPEAKERS 600D Nylon Two stereo speakers w/mini stereo plug integrated in the main bag compartment Three zippered compartments; the main, the inner, and outer compartments Contoured adjustable shoulder strap with a close flap cell phone pocket High quality water resistant material for easy cleaning Triangle style sporty design with speakers that uses 3 AA batteries (not included)