This is a great laptop sleeve. Made for Apple computers, but my Lenovo X1 Carbon fits perfectly in the sleeve as well. I really like the fact that I can transfer the sleeve from one Rickshaw bag to another using the Velcro system.
Perfect laptop sleeve for the Medium Zero bag. The velcro is really sticky though, so it can be difficult to set just right inside the bag. Once it's set properly though, it keeps my computer secure and keeps me comfortable when I'm slinging my bag around.
Just because of the way it fits in my Zero, I've had a few problems making my laptop slide in easily. All in all a good case. Wish I could have customized a little to make it look better inside my bag.