Mobile Edge is offering a secure pack ideal for computers with screens up to 17". Exclusive security system, enabling access to the interior only when backpacks is off shoulders. Roomy interior for books and files, with pen holder and pockets for CDs, PDA, keys and accessories. Dedicated exterior media pocket for MP3 or CD player with pass-through port for headphone cable. Ergonomic ventilated back panel for superior comfort, EZ-Access cell phone pocket on shoulder strap, with reflective safety material trim.