The Allen Company Blue Mesa Fishing Pack is flexible enough for afternoon trips or full-day outings, providing hydration compatibility and a fold-down workstation for any job. The fishing pack fits up to twelve total fly/tackle boxes, ten fitting in the main compartment and two smaller boxes fitting in the side compartment. Accommodating various-sized gear loads, the pack's ample storage helps keep you organized. Product Features: FISHING WORKSTATION: The Blue Mesa's main compartment flap folds into a compact and easy-to-use workstation designed for beginner and expert fishing enthusiasts. LARGE STORAGE COMPARTMENT: This fishing pack offers a customizable carrying solution, fitting up to ten fly/tackle boxes (including 3600 StowAways) in the main compartment. At the same time, bottom straps adjust for accessibility and added security. STAY HYDRATED AND ORGANIZED: The Blue Mesa is hydration-compatible, providing a pocket for a bladder and spacious compartments for strategic organization on and off the water. COMFORTABLE SUPPORT: The backpack's rod tube pockets and padded shoulder backpack straps provide you with the comfort and flexibility needed when hitting the water.