So, I have used this product for at least two years. It has incased my original iPhone and now my iPhone 3GS. I live in Salt Lake City. It's a very dry climate here. I have never had an issue with the case before. Coincidental or not, I went on a cruise through the Caribbean a few weeks back, after a hard workout I was going to play some volley ball on deck with some friends. I was taking off the armband when one of my friends pointed out that my iphone was about to come crashing out of the case. The seam split all the way down, there was my iphone dangling... Scary. I wonder if the humidity had any part in this? It's gotten wet from workouts of course, but never saturated the way it would on a cruise.I see the armband is only about 20 dollars on Amazon, I believe I bought this in a Apple store or, a Simply Mac store for around 60. Anyway, I gave this product three out of five stars because I did get a lot of use out of it, but that is a real concern (the seam, especially knowing that the problem will likely occur during an activity when that arm band is needed most, and needs to be secured. (biking, hiking, etc... all great phone breaker activities).