Elite Backpack Black by Rocket Science Sports Nylon Smart-CompartmentTM Design allows effective organization & easy visualization of your gear. Air FlightTM Padded Back. Rain Cover keep your gear dry when it is raining. Helmet Compartment. Dual-Sided Mesh Pocket designed to hold your fluids. Heart rate monitor compartment. Reflective Strips so that people can see you. Rugged 1680D Nylon & 600D Ripstop most advanced and durable fabrics so your bag lasts for many seasons.