The Serfas ARK Expandable Half-Frame Bag is perfect for both bike-packing or just simple rides around town. With an expandable bottom, you can increase the volume of the bag to accommodate extra gear. The bag features a water-resistant exterior and multiple Velcro straps to secure itself to your frame. If you tend to get thirsty on your rides, you can store a water bladder in the bag and thread the hose through the hydration port.
Hydration port allows you to internally run your favorite water bladder
5 hook and loop straps securely attach the bag to your frame
Storage: 3 liters to 5 liters expanded
Size: 5.5” height (9” expanded) x 17” length x 2” width
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