Lighten up and stay hydrated wherever adventure takes you. Air Support light back panel - body mapping gives efficient ventilation and comfort. Ventilated harness is lightweight and breathable. Secure zippered pocket is great for phone keys and more. Stow and secure helmet. Adjustable sternum strap gives a custom fit and stability. Reflectivity offers visibility in low light. Light loop. Tube trap management. 1.5L Crux reservoir with Quicklink disconnect. 1L Gear capacity. BPA/BPS/BPF-free construction.