Sold as Prie Rawhide ($25) but packaged separately under the Prie Rawhide and Prie Moccasin names, Tunewear's five latest flip-style leather cases for the third-generation iPod nano use a combination of quality black or brown leather and distinctive stitching to completely protect the iPod inside. Though the cases still use increasingly stale flip-style face covers, the lids and cases are very thin, use magnets to stay shut, and include separate screen,…