Karvt (http://www.karvt.com) has released a line of wooden skins — yep, wood — for the iPhone 4 and iPhone 3G. They’re described as all-natural, eco-friendly, sustainable and made from 100% real wood.

The iPhone 3G skin is US$15, and the iPhone 4 skin is only $25. Karvt hand crafts each of there products by hand in the US, and no part of the process is ever outsourced, the company says.