I brought the defender to protect my new Iphone 5 handheld computer/phone. The skin provides the cushioning needed to protects the iphone during falls and at the same time it allows me to use the buttons. During heavy usage of the both battery cable and the audio jack you will find the silicon skin starting to have abrasions and this also happens to the point where the skin touches the belt holster. This is normal wear and tear and during my 1 year usage did not pose a problem. Otterbox support rocks as they sent me a new skin when my belt holster clip broke and my silicon skin showed signs of wear and tear. Otterbox defender is highly recommended for people with active lifestyles.
Pros: High quality, Durable, looks nice
Cons: soft silicone might wear out in certain areas.