Lighten up and stay hydrated, wherever adventure calls. The Hydrobak Light carries a 1.5-liter Crux Reservoir with Quicklink disconnect, plus an extra 1-liter of cargo space for basic essentials so you can carry on. Designed with lightweight and durable materials, the streamlined silhouette features an Air Support Light Back Panel and a ventilated harness for cooling and breathability. Additional external features include helmet carry, light loop and reflective detailing for added safety. Have peace of mind with a secure zippered pocket for keys, phone, or tools, and enjoy extended comfort with the adjustable sternum strap.. . . . . Lightweight and Durable Materials. Air Support Light Back Panel: Designed with body mapping technology for efficient ventilation and lightweight comfort. Ventilated Harness: Lightweight and breathable. Secure Zippered Pocket: Perfect for keys, phone, or other essentials. Helmet Carry: Stow and secure helmet. Adjustable Sternum Strap: Offers a range of adjustments for a custom fit and increased stability. Reflectivity: For low light safety. Light Loop: Clip on a light to make the ride to and from the trailhead safe. Tube Trap Management: Keeps your tube secure and accessible when you need it.. BPA/BPS/BPF Free: true. Quick Link: true. Pack Weight: 170g/6 oz. Hydration Type: CRUX Reservoir with Standard Exit Port. Torso Fit Range: 38-53cm/15-21 in. Gear Capacity: 1L/60 cu in. Hydration Capacity: 1.5L/50 fl oz. Imported.