Lightweight, stretch-fit 12L pack for trail running, moves with your body and snugly carries essentials for medium to long trail runs, mtn bike adventures, or highly active sports. Lite shoulder straps. Motion belt. Twin link. Compression front lifter. 1 internal zipped pocket. 1 main compartment. 1 belt zipped pocket. 2 compressible side mesh pockets. 4D pole holder. Bite valve with on/off system. Plug-n-Play system. Soft 1.5L bladder - PVC, Phthalate, Bisphenol free. Easy access bottle lateral storage. 4D reservoir compartment. Airvent agility. Motion fit trail. Whistle. Reflective.