I bought an new case for my iPhone 4s. I used to carry an otterbox to protect my phone. I was not afraid of dropping my phone after that. The only problem was that I wanted something that was not as bulky but still protected the phone. I started looking for something that was waterproof so I didn't have to worry about it on my mountain bike. Then I came across and advertisement for the Lifeproof case. It is waterproof, dust-proof and shock-proof and it has a sleek low profile that barely increased the size of my phone. I have successfully taken it in the ocean with out any problems. The other day at the gym I was swimming listening to my iPhone.