The Camelbak Octane Dart hydration running backpack is a great choice for those who want a minimalist design & maximum comfort while running or walking & ensures hands-free hydration & 20% more water per sip thanks to the included Crux reservoir. The reservoir has a capacity of 1.5L (50.7oz) & features an ergonomic handle for easy refilling, as well as an on/off lever which helps to prevent leaks. The backpack offers 2 zipped pockets & a stretchy pocket on the harness for gels & bars & helps you stay visible in the dark due to reflective details. Comfortable transportation is provided by a carry handle, a padded mesh back panel & adjustable backpack straps.