Our good friends over at BeyzaCases not only sponsored a giveaway, but they also sent out their latest and greatest leather sleeves for the iPhone 4 and iPad 2. Theses sleeves are a part of the new Zero Series of leather sleeves made for the iPhone 4, iPad 2, iPod Touch 4G, MacBook Air 11", Galaxy Tab and the Zoom. What sets the Zero Series sleeves apart from the rest is that they are the world's thinnest leather sleeves available. That's a big statement to make certainly. Well, that's what I'm hear to find out. BeyzaCases' leather sleeves aren't anything new to me. I've had the opportunity to review the SlimLine leather sleeve for the iPhone 4, as well as the Retro Slim leather sleeve for the iPad. It's no surprise that BeyzaCases loves making slim leather sleeves for all sorts of gadgets. The latest Zero Series line of leather sleeves takes one step further in the slim department for sure. Catch the full review right after the jump!