The Camelbak Nano Running Pack comes made from 3D micro mesh which offers multi-directional air flow and cushioning to maximize comfort and breathability, along with a secure phone pocket which is conveniently located with a zipper closure for secured quick access. Other features include a trekking pole carry and dual adjustable sternum straps which offer a range of adjustments for a custom fit and increased stability. Relectivity for nighttime activity. Stretch overflow pocket. Safety whistle. Capacity: 2 x 0.5L Colour: Black Material: 100% Polyester Code: 191900209