The Gas Tank™ offers quick, one-handed access while riding. Fill it with M&M's, tools, a camera, bear spray, whatever. It's fully padded with closed cell foam and lined with light fabric.
For spring 2011 the tank got overhauled and now features a full wrap around water resistant zipper for a full closure. The updates also include a hook and loop interior divider, a contoured stem mounting strap that stiffens up the front of the bag, and a gripper top tube wrap that doubles back for bomber stability.