I got my rMBP and with it, received the "All in One Laptop Folio 15" / Heritage", so here's a quick review. Apparently, it's not very easy to find reviews of this sleeve, so I hope this one can bring answers to some of you who still hesitate. About the materials: It arrived fews days after order (I live in Switzerland). It was in a large bubble-wrapped package, and the sleeve itself was protected by some tissue envelope. At first, it was pretty smelly, like old hand-crafted leather scent. Some people could not support it while I found that not very problematic (gone after a week anyway, so that's pretty much a non-issue). The case was really tight and I had to put some books beforehand in order to extend it a bit. The more I use it, the more it becomes "loose" but it still stays very fit. The rMBP can fit inside with a SD card inside the slot, although you must be careful when taking it in or out, as it could grip on the sleeve and damage it. You can also put some stuff on the sleeve like thin books or sd-card with their package, but don't expect to stuff your macro-economic advanced book volume III with your mac... Protection wise, I don't believe it will be enough if you drop your stuff while riding a bike, but it would be enough if you just want to provide support against scratches (by the way, my rMBP has a scratch next to the trackpad, probably a defect as I don't wear anything on my wrist and was the only one to use it). The whool is 4mm thick but there are openings on the top and the bottom, and there goes the water-proof protection... The leather at the bottom can provide a solid grip, but if you are grabbing the thing with two fingers on the wool, expect to drop your beloved mac pretty quickly. I love this case, it comes a bit expensive but the look it gives and thermal insulation (I drop my mac on my legs with the sleeve as a layer between, and I never felt the heat from the laptop, even while playing Diablo 3). The zipper is nylon and can't damage the aluminum brushing (which comes damage anyway, huh Apple!). I know there's another sleeve you can pre-order, but I believe it's better to have a firm zip instead of this flap-in, as it is bound to become loose and ultimately, make your laptop fall of the sleeve. Also, the zipper can provide like a "stand" on the back of the mac, so it won't slip away. If you can afford it (or, like me, receive it as a birthday present) I think that's a good purchase. It may be a bit over-priced, but if it's hand-made in Italy and not in China, so there's added price. Hard graft answered my questions (does it fit retina, what's the zipper made of...) quickly and in a friendly manner. They make fantastic stuff and I would love to buy some of their bags too, like the origami-one.