Is spacious enough to hold all you need for a good ride, from tools and food to jackets, and larger tire pumps. Is perfect for bikes with limited seat/rack clearance problems, or for use with seat post style rack systems. The main compartment opens fully for easy access via a heavy-duty YKK zipper. features premium hi-density closed cell foam padding on the sides and bottom of the main compartment, so it is well suited to carrying camera gear or other fragile items. The addition of closed cell foam will ensure exceptional performance, bag stability and lifetime of sag-free performance.