Water resistant messenger pack designed to work with Origin8 front flat racks. Removable bottom panel provides structure and offers a sturdy platform for stacking items. Features a dedicated U-lock pouch and multiple pockets for pens and small items. Roll top closure with adjustable strap and buckle. Durable 600D Polyester construction with TPU inner liner for water resistance. Bag volume: 3800 CI (18.2`x11.2`x19`)