This versatile, rugged backpack is NTOA reviewed and approved and has quickly become a customer favorite! . . Includes 100 oz. BLACKHAWK!® Hydration System. . Drink system protected by Microban® antimicrobial technology. . Bite Me® bite valve and patent-pending quick-disconnect system. . Twin compartments for extra storage. . Large compartment has internal pouch for radio packs and three antenna ports with flaps. . Over 100 external S.T.R.I.K.E.® webbing attachment points. . Anodized D-rings and quick-cinch buckles for compatibility with 3-Day accessory pouches. . Reinforced waist belt with additional attachment points. . Padded, contour-fit shoulder straps with sternum strap. . Rubber drag handle. . Metal grommet at bottom of pack for drainage