The double gusset, Premium V-Load briefcase from Mobile Edge has an additional expanding file section for greater carrying capacity. If you carry more than the bare essentials this is the case you will need.
Mobile Edge Features
Removable SafetyCell computer protection sleeve fits up to a 16" laptop
Fits in any overhead or under any seat
Exclusive Wireless Security Shield pocket protects cell phones and PDAs from hackers and viruses
Exclusive Bungee Comfort System; built-in elastic shoulder strap system moves with you to insulate your body from stress
Roomy interior with pockets for CDs, PDA and phone