Revelate Designs Sweetroll Bag - Medium Waterproof seam sealed construction Adjustable handlebar offset using stackable spacers prevents cable and lever interference and bag abrasion Manta Flap - Shove stuff between the flap and the main bag. Features 2 rows of daisy chain webbing for custom configurations. Swap it out for a pocket for added capacity. Fiberglass cross stiffener adds rigidity to the mount area and provides structure when packing and unpacking Foam spacer block at head tube prevent abrasion and bag wear against bike frame.