The Allen Company Blue Mesa Fishing Pack features a flexible pack for afternoon trips or full-day outings, providing hydration compatibility and a fold down workstation for any job. Fishing pack fits up to 12 total fly/tackle boxes10 fitting in the main compartment (11L x 7.5W x 1.8H) while 2 smaller boxes fit in the side compartment (9L x 5W x 1.5H). Accommodating various-sized gear loads, ample storage help keep you organized. Stay hands free when on the water and cast your line with Allen Company. Product Features - CUSTOMIZABLE SOLUTION: Fishing pack offers a customizable carrying solution, fitting up to 10 fly/tackle boxes (including 3600 StowAways) in the main compartment while bottom straps adjust for accessibility & added security. - TACKLE BOX STORAGE: StowAways measure 11-inches long x 7.5-inches wide x 1.8-inches high & the pack also fits 2 smaller fly/tackle boxes in the side compartmentmeasuring 9-inches long x 5-inches wide x 1.5-inches high. - FISHING WORKSTATION: Main compartment flap folds down for use as a workstationpack measures 12-inches long x 6-inches wide x 20-inches high & 1,440 cu. in. (23.25 liters). - STAY HYDRATED & ORGANIZED: Fishing pack is hydration compatible, providing you with a pocket for a bladder, & offers spacious compartments for strategic organization, on & off the water. - FLY FISHING GEAR: Side water bottle or rod tube pockets & padded shoulder backpack straps provide you with the comfortability & flexibility needed when hitting the water.