Have you ever gotten caught in a torrential downpour, had wind blow your box off the boat or kayak, or spent lots of time in saltwater environment? Hard-core anglers know that “stuff happens”. If you have a large box chuck full of your big stuff, you have a significant investment in flies. CLIFF designed this box to provide the best possible protection, JUSTIN CASE. Bombproof and completely water and air tight. Utilizes the same time tested slotted blue material that CLIFF’s famous for. (13″ x 10 1/2″ x 4 1/2″)