Alpinestars 6107115-12 Black/White 6.5"/9.5"/5.75" Tech Aero Backpack The Tech Aero Backpack is aerodynamically profiled and comes with a host of comfort and performance features that are specifically designed to enhance riding comfort Incorporating new innovations such as the new anatomical shoulder straps and quick-release strap system, this technical backpack is extremely convenient Back padding also helps distribute weight evenly across the back area which is important for comfort on longer rides. Innovative new 'S' design shoulder strap system are anatomically designed