The Porta Brace BK-2EXP Modular Backpack, Extreme Version (Black) is designed to provide maximum comfort for periods of extended mobile usage when carrying a camcorder with accessories. It includes an ergonomic AH-3H-MEM multi-functional memory foam backpack harness system. Features include a protective rigid inner frame and zipper covers for wear spots on corners. A BK-LPM modular option for a laptop computer, a BK-P2M removable front double pocket, BK-RBM removable belt pouch and BK-TQM tripod quiver module are all included.