Spitfire MK II® Utility Back PanelSpitfire MK II Utility Back Panel adds extra carrying capacity without the need for a separate backpack. It has two large zippered utility pockets and a flat compartment for a hydration bladder or other flat gear. The panel attaches with a zipper system and is compatible with the Spitfire & Spitfire MK II plate carrier and HALIFAX backpack. Material: Cordura 500D; 100% nylon; Profile: back panel format adds storage without using a separate backpack;