>>1117033Hydration is key for the warfighter's ability to sustain himself on the battlefield. Level-1 elite black-ops operators use the highly Nalgene™ Portable Hydration Units (NPHU) for maximum interoperability with tactical pouches and improved responsiveness to dehydration in today's high intensity combat environments. Tactical black sealant valve cap made with low observable radar absorbent materials provides you with enhanced first look, first shot, first kill advantages. Transparent jungle green polymer enables you to see your hydration fluids making for a stunning visual. These Hydration Units have been torture tested without fail. Extreme Impact Resistance means it won't crack or break when dropped.