The red interior in the sleeve has a foam material with a lot of friction. This makes sliding a note book in and out difficult. It should have used softer materials instead.
This sleeve is more attractive and useful than you might think. Yes, it cradles a laptop, securing to the inside of the bag by means of Velcro. But it also has a bright red fleece lining that helps you find stuff inside and generally distinguish where you are in the bag both by sight and by touch. I rarely use this sleeve for a laptop. Instead, I use it for my iPad and keyboard. When I'm not carrying those, I use it for folders, loose papers, magazines, or even a book. They fit perfectly and come out unwrinkled.
Wasn't what I was expecting, but okay.
I purchased this for use in a medium sized messenger. It is attractive and I generally like the way it looks. It fits my 13 inch MBP very well, if anything it could be a little snugger. The inside is very red.
I like the idea that I can move it between different bags if I need it somewhere else; or even use it independent from the messenger bag.
My only gripe, and it's a small one, is I don't think the flap is fully necessary. I think a single strap over the top would be sufficient. Especially when the sleeve is in my bag. So, I guess my complaint is, it's too safe.