Ortlieb RC Frame Pack - Toptube Roll Closure 3L BlackOrtlieb RC Frame Pack Toptube Roll Closure 3L Black. Ortlieb RC Frame bags feature a waterproof roll closure design. The roll Closure allows for a large opening easing packing of larger or heavy items. Stable mounting with 3 strong individually positionable hook and loop fasteners mounting the bag to the frame top tubes with one on each end for head and seat tubes. Ideal pack for bikepacking alp crossing and trekking tours Suitable for heavy gear such