I bought my first Macbook Air and wanted a light but protective sleeve to use whilst travelling. I found this product and comparing it to the other available sleeves thought it seemed the best. It is amazing. Really light, easy to slip the Macbook in and out, not much bigger than the Macbook itself but the best thing is that it is nearly impossible to actually get to the Macbook when it is in the sleeve. The protective sleeve just seems to absorb all pressure. I am really happy with the sleeve and have recommended the equivalent for my friend who wants something similar for his Acer.