These kind of systems are used by troops all over Iraq and Afghanistan to stay hydrated with inconvenience and the bladder can be stored in a Bergen for consuming liquids whilst yomping long periods, great for long distance running! An essential gym accessory especially for the idea of long distance running etc! BRAND NEW 2.5 Litre Aqua water bladder for consumption of liquids on the go! Excellent for tabbing and keeping yourself rehydrated during those long yomps, tabs, hill walking, backpacking etc.! A new dynamic improvement features an inbuilt Anti-Bacterial System for adding protection when using steralised water High quality combat Aqua Bladder ideal for sports, combat, running, travel, hiking, camping, holidays, walking, exercising, cadets, soldiers, fitness training, essential for the gym when doing endurance!!! 2.5 LITRE wide mouth aqua water bladder 2 shoulder straps sternum strap multiple D-ring attachments detachable tap. Water is an essential during aggressive operations and regular hydration is an essential due to the strenuous demands on the body of carrying large loads of weight, local heat, sweating and is imperative to maintaining yourself at 100% efficiency, don't be a victim of dehydration, especially at this price! Made from 1000 denier waterproof Cordura.