SwissAlps Backback: * Red/black polyester * Airflow back system: multi-panel airflow design provides extra padding for comfort and maximum back support * Audio interface: internal media pocket with external headphone port * Securely holds a CD or Mp3 player * Shoulder strap system: ergonomically designed, includes adjustable sternum strap * Organizer pocket: interior pocket provides storage for pens, pencils, cell phone and CD"s * Includes detachable key ring * Water bottle pocket: external side pocket expands to secure various size water bottles * Compression strap system: designed to adjust backpack volume while securing contents * Prevents unwanted vibration * Rain cover included * Assembled dimensions: 5"L x 13"W x 24"H