Serfas' Stem Bag easily mounts to any bike frame to give you quick access to nutrition and other essentials. It has padded, reinforced sides and a Mesh flap closure, as well as Velcro straps to attach it to your top tube and stem.

The perfect bag for a wilderness adventure or an all-day ride around town. The Serfas Ark Expandable Half-Frame Bag can adapt to accommodate more gear with its expandable bottom and will resist the elements with its durable water resistant construction. Thirsty? Pack your favorite water bladder (sold separately) and route the hose through the integrated Hydration Port. - Hydration port for water bladder compatibility (bladder & hose not included) - 5 adjustable hook & loop frame mounting straps - Multiple bag exterior attachment points - Size: 5.5" Height (9" Expanded) x 17" Length x 2" Width - Capacity: 187 Cubic Inch Bag Volume (3L) / Expanded: 306 Cubic Inches (5L)