adidas Barker Backpack The Byrnes Backpack takes you back to school in style with 2 main compartments, a tricot-lined Media Safe pocket, side water bottle pockets and front pocket with deluxe organization. Contoured/padded shoulder straps and padded back panel help you carry your stuff. 3-D embroidered brandmark. The Byrnes Backpack takes you back to school in style with 2 main compartments, a tricot-lined Media Safe pocket, side water bottle pockets and front pocket with deluxe organization. Contoured/padded shoulder straps and padded back panel help you carry your stuff. 3-D embroidered brandmark. Finished with a zippered Media Safe sunglasses pocket on top. The LoadSpring shoulder strap system and air mesh back panel will help ease the load.