This U.S. Military Patrol Bag is the outer bag component of the legendary MSS (Modular Sleep System). More specifically, the updated post-2007 improved version. Completely usable on its own for comfort in moderate temps of +50AdegF to +30AdegF. Combine with the original issued inner ICW bag (not included here) and stay cozy down to an astounding -30AdegF. Water-resistant ripstop nylon Reversible double pull sliders for adjustable ventilation Adjustable hood with drawcord and barrel lockPlease Note: May have DRMO ink stamp, please see Additional Product Information on how to remove