The Camelback Classic Light 70oz. is a perfect way for you to have a small pack on your back and keep yourself hydrated as you get some exercise. Made from lightweight and durable materials the Classic Light is ready for any adventure. Air Support Back Panels keep you comfortable if you are skating, hiking or biking. The Hydration Bladder is capable of holding up to 70oz. of water within an easy reach while you are on the go. Lightweight and Durable Materials- Fatigue free and will last for years. Air Support Back- Comfortable to wear and contours to your body. Ventilated Harness-Keeps you cool as you exercise. Secured Zipper Pocket- Easy storage for valuables or items you want to keep with you. Adjustable Sternum Strap-Customizable fit. Helmet Carry- Gives you a nice place to carry your helmet when you are not exercising. Reflectivity-Allows you to be visible at night.