On multi-day gravel rides, the Apidura Expedition Full Frame Pack carries heavier gear in the middle of the bike, so the bike keeps its natural handling. This bikepacking frame bag stays put with eight Hypalon stability straps and silicone print along the edges. Internal Zipper Control Rails stop the pack from bulging and keep the zippers working smoothly with one hand. What Our Gearhead(R) Experts Are Saying:"Over full days in the saddle, a frame pack hydration bladder in the base of the pack covered the water I gave up when the pack took over the bottle cage space. I fed the hose out through the port and drank without reaching for a bottle. The mounting tab held the bladder steady."