I was going to give this sleeve 4 stars but I'll boost it up to 5 for Amazons 5 star customer service. I have a 17.3" Toshiba Qosmio Laptop that fits very well in the sleeve. It's nice and Snug at the bottom and sides with about an inch of room left at the top area. Even with the extra room at the top, my laptop will not move around because the overall fit is snug, they just give you a little extra room in case you need to thrown in perhaps your power cord etc. The external detachable should strap is what I love the most and the reason I purchased the sleeve in the first place. My others lack this feature. Hidden inside the sleeve up top where the zippers meet are the handles for hand carrying. That's where the 4 stars come in. If you are using the handles, you can only close the zipper until you reach the edge of the handle, which leaves a small portion of the sleeve open underneath the handle. It doesn't hinder the functionality but it would have been nice to include a fold over flap to cover the exposed portion underneath the handles. Small design flaw. So I push in the handles, zip the bag all the way and just use the shoulder strap if it's bad weather. If the weather is okay, it doesn't matter about using the handles. If you like this bag, this same company (Meffort)has a combo that offers not only the bag, but the matching mouse pad, the matching kindle or ipad skin and the laptop wrist skin all in one bundle for just a few bucks more. The only difference is that you have to order from the company direct. I actually ordered from them first and didn't' realize Amazon had this one with prime but it didn't have the extra's.