I bought the Proporta leather case as described here: http://www.ifans.com/forums/showthread.php?t=158792&highlight=proporta case Mine is the brown version. Looks nice, fits a treat, good protection and good workmanship, but I don't think it is leather. The smell is plastic, and the inside surface of the 'leather' that forms the sides of the case is woven black material. The sides are far too thin for it to be lined leather. It looks like vinyl on fabric. Given that the sides are identical to the rest of the 'leather', I want to know how I can determine what it is made from. Does anyone have any ideas as to how I can recognise real leather? Also, if someone has this case, could they confirm or not that the inside surface of the sides is woven black fabric and not bare leather? As an aside it came direct from Proporta. By the way I've tried a laboratory microscope at x100 with no joy. Yes, I just happen to have one on hand.