Hi, I've read lots of posts about finding the "perfect" backpack/bag/sleeve for a 15" MacBook Pro. I took the plunge and I bought Crumpler's King Single computer backpack. The backpack does come with a sleeve with velcros so that it stays in place while in the bag. It's removable too if you want to carry only the MBP or put it in another bag (I do use my Dickies messenger bag once in a while). I bought it in a local computer store called Micro-Boutique (INSO), which is an official Apple reseller in Montreal. I got it for 124$ CND (~ 108$ USD), a lot cheaper than any online store I've seen so far. So my recommendation is that if you know a local store that carries Crumpler bags, go there before considering ordering online. Not only will you be able to inspect the bag by yourself but you'll save a few dozen bucks in the process. I could post some pics on request and/or provide additional feedback on request. IMHO, it's a near perfect bag for your brand-new MacBook Pro! I've put up a couple of pics here.