There are pockets and wire channeling for multiple electronic devices and 1,850 cubic inches of storage space. It features high density padding in the shoulder straps and back panel for comfort, nylon mesh backing material for better air flow, and adjustable pone / MP3 pouch on the shoulder and a second lined MP3 / sunglasses pouch inside. The solar panels provide protection for fragile items inside the front pocket and wire channels throughout the bag take power to the shoulder strap for headphones, etc.