Blackhawk Blackhawk 3-Day Assault Backpack. CONVENIENT Main compartment offers easy access with front pocket and map pocketHYDRATION Special compartment accommodates 100 oz. hydration reservoir (sold separately) Package Contents: Blackhawk 3-Day Assault Backpack Lightweight and versatile the Blackhawk 3-Day Assault Pack is built to withstand the rigors of constant use.CONVENIENT Main compartment offers easy access with front pocket and map pocketHYDRATION Special compartment accommodates 100 oz. hydration reservoir (sold separately) 603D00BKA