Can open back area completely for packing overnight personal items and has a full zipper liner so the clothing doesn't come out and keeps it private if you are using as a briefcase as well. Ordered this and the Samsonite mobile office 15" and kept this one. This is narrower and has 4 wheels vs/ 2 wheels on the Samsonite, and I think this one is better organized than the others I have tried.

I'm very happy with this purchase, this is an incredibly well built and utilitarian briefcase. The expandability was recently helpful for me while traveling. The heather grey with brown leather is gorgeous...the photos don't do it justice. Highly recommended for business travel as well as for a weekend bag which holds a couple of days worth of clothes when expanded.