http://marware.com/SportFolio.html Been considering a new "slim" case for my pb ever since my metal briefcase busted. The only negative with the briefcase I had was that it was heavy. This Sportfolio looks to be exactly what I need, but I'm concerned with the protection it provides. Like is the interior plastic "shell" 100% covering the laptop or only on the bottom and sides? I'm also looking for a basic thumbs up from current Sportfolio owners.