A great addition to any off-road rig, the Olliepack Seat Bag offers a straightforward, roll-top closure providing added water resistance as well as variable capacity to suit your carrying needs throughout the roughest of rides. No rack or hardware needed to lock this bag tight under the saddle and out of the way enough to get your bum behind the saddle while negotiating steep descents or tight trails Stays snug and stable on the most rugged terrain with the trusty help of secure saddle rail buckle straps and awide, grippy seat post velcro strap External powermesh stash-pocket allows for quick storage of a lightweight layer, wrappers and more Roll-top closure Side compression buckles Center compression strap with reflective tape One Wrap velcro seatpost strap Saddle rail buckle straps Measurements: max (with 3 rolls to close): 6" wide at top, 2" wide at bottom, 5.5" deep, 20" tall Capacity: 6L Weight: 11oz