The Classic Light is lightweight yet durable, very adaptable and comfortable for any length adventure. The sleek design features a 2L Crux Reservoir with Quicklink disconnect and an extra 2L of cargo space. The Air Support Light Back Panel and a ventilated harness ensure effective cooling and ultimate breathability Integrated Tool Organization Air Support Light Back Panel: Designed with body mapping technology for efficient ventilation and lightweight comfort Bungee Overflow: Quickly stash or shed an extra layer Adjustable Sternum Strap: Offers a range of adjustments for a custom fit and increased stability Tube Trap Management: Keeps your tube secure and accessible when you need it Light Loop: Clip on a light to make the ride to and from the trailhead safe Helmet Carry: Stow and secure helmet Reflectivity: For low light safety Size: 2L Reservoir: 2L Weight: 410g Gender: Unisex