I first had an original leather case made by Nokia, but it was very big and hard to slide into my pocket, so i got one of these hard plastic crystal cases, and its brilliant, it protects the phone when its dropped and it slip into pocket well,and it isn't very thick when installed on the phone... i find it very practical, and it only cost me about €3 on ebay. It is a really good case and fits perfectly, easily removable and it even looks good... i really like it and I recommend this case to anyone looking for a case.