I just got the Tucano Second Skin folder, and it is phenomenal right out of the box! It is made of neoprene and offers a 1/2 inch buffer between your laptop and the outside world.
I personally think the fit is great, it is slim directly onto the MacBook itself and offers a very bump proof buffer. I do not reccomend it if you plan on stopping bullets though, anything direct to poke it or anything will probably give a tear to the neoprene and ruin your new Tucano case.
Downside #2, no extra compartments. The only thing you can carry in this case is your notebook itself. Great to put in a briefcase or backpack or to take traveling in another container. There is no room to store the charger, which for me is crucial. There is room to fit some USB cables and DVD's other than that there is no room.
The snug fit is the best thing the Tucano Second Skin has going for it! It only zips about 2/3 of the way down the sides which doesn't allow you to keep the MacBook open and covered. Resting your laptop on top of the case is your best bet!
Overall, 4 Stars. Great case, great for backpacks etc. Great price for the neoprene!