Features Enter your model number to make sure this fits. 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.Advanced poly-fabric (600 denier on main shell; 1200 denier on base) outer construction is polyurethan 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 is designed to anatomically follow the natural contours of rider's torso and incorporates Description Product Description 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.