Hydration packs are designed to transport water and make drinking convenient and efficient during outdoor activities like biking, hiking, camping, and running. No need to stop or even slow down to take a sip of water; simply grab the drinking tube that’s connected to the included water reservoir and take a drink! These genuine GI US military-issued MOLLE II hydration packs are made to the demanding and quality specs that the military is known for. The hydration carrier holds the 100 oz bladder, and is made from 500 denier nylon water-resistant fabric. The carrier material is laminated to a single cell foam backing to insulate and maintain water temperature. It also features quick slide release buckles on both the shoulder and chest straps, adjustable chest and shoulder straps, and a carrying handle at the top and one in the center.