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I own it, and wrote something about it a while back:

"Overall, I will say it is a great sleeve. The magnetic clasp is strong and reliable (just have to make sure it clicks correctly; very easy to do), and the fit is snug but not so snug it's difficult to slide in and out (like some other really tight fitting sleeves). So far it offers good protection (no zippers or anything) and the leather, while fake, is still quite nice (especially for the price) both aesthetically and also grip-wise. Personally, I find neoprene sleeves annoying because when you carry them, the sleeve inadvertently bunches up and "ripples" where you're holding it. The leather here is nice and firm and keeps its shape."

Good luck.

You may want to consider this too: http://www.*******.com/Reee-Apple-MacBook-Air-133-Leather-Sleeve-Case-by-CHINAO-REEEMBASleeve13.htm

It's a little more expensive, and also great looking.
 
I own it, and wrote something about it a while back:

"Overall, I will say it is a great sleeve. The magnetic clasp is strong and reliable (just have to make sure it clicks correctly; very easy to do), and the fit is snug but not so snug it's difficult to slide in and out (like some other really tight fitting sleeves). So far it offers good protection (no zippers or anything) and the leather, while fake, is still quite nice (especially for the price) both aesthetically and also grip-wise. Personally, I find neoprene sleeves annoying because when you carry them, the sleeve inadvertently bunches up and "ripples" where you're holding it. The leather here is nice and firm and keeps its shape."

Good luck.

You may want to consider this too: http://www.*******.com/Reee-Apple-MacBook-Air-133-Leather-Sleeve-Case-by-CHINAO-REEEMBASleeve13.htm

It's a little more expensive, and also great looking.

I have one as well. Work well, reasonable protection, cheap price.
 
I bought a white one for my gf's 11" MBA. When it came in the mail I was a little disappointed by the quality but I guess for under $20, you can't expect too much. It provides a decent amount of protection but it also adds some bulk to the tiny 11". My gf, however, absolutely loves it and she's gotten a lot of compliments on how professional it looks.
 
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