Waterproof bag designed to attach to the underside of Aero barsLarge capacity is perfect for packing extra clothes or gear for bikepacking and trekkingWelded seams with waterproof materail and roll top closure insures your gear stays dryAttaches via adjustable velcro strap systemReflective striping increases visibility at nightAvailable in two sizesAdjustable Straps6.5x6.5x16.1`488 c.i.RedX-Large (201-300 c.i.)