The sleek and ultra-light Camelbak Hydrobak Light is perfect for any adventure. Low-profile in design, this pack features an Air Support Light Back Panel and a ventilated harness for effective cooling and ultimate breathability. Features: 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 170G