In the initial design and development phase of the new OGIO Tank Bag collection, the one thing we didn't want was a “me too” mounting system. We asked ourselves, “Who should we collaborate with for our new line of tank bags?” The list was just one name, National Products Inc (NPI), manufacturer of RAM Mounts. RAM is widely recognized as the industry leader in mobile mounting solutions, providing the most innovative and durable designs in the marketplace. The collaborative result encompasses a patented and patent-pending mounting system that is easy to install, easy to use and both elegant and simple in design. All RAM mounting bases and tank bag rings manufactured for OGIO are Made in the USA at NPI's facility in Seattle, Washington. World Leader In Mounting Systems + World Leader In Powersports Bags = World Class Product. The S2 is a fixed 4L tank bag with a top made from single shot molded PU with Carbon Fiber graphics and the bottom of a single shot molded PU with matte finish. This bag is water resistant, features a see-through phone window, power cord port, internal removable storage pouch and shoulder strap. A great bag for everyday use, the S2 is packed with features to make carrying small items convenient. Features: Single shot molded PU exterior is water resistant and will not deform from wind shear, The top features carbon fiber weave graphics, the bottom a matte black finish, Quick release pull strap for fast removal, Touch sensitive window on top of bag allows for phone and map usage, Reflective piping and graphics for increased visibility in low light, Removable Velcro™ backed Storage Pouch, Quick access grab handle, Removable shoulder strap for easy carrying off bike, Full cover, touch sensitive rain cover features a shock cord with cord lock for tight fit and secure snap for added safety. Dimensions: 8.75” L x 7.75” H x 7.75” W / CM 22.2 L x 19.6 H x 19.6 W + 1.65 lbs / 0.75kg, 244 Cu.In/4L + 600D Poly, Carbon Weave PU molded top and matte finish PU molded base. Ogio Tank Ring required for mounting and sold separately