With more and more iPhones being sold every day, and the rumors that Walmart might be getting into selling the phone, the iPhone accessory market is a lucrative place to be these days. Today I'll be reviewing the Streamline Armband Case for the iPhone 3G. Griffin Technologies has sent us an armband for the iPhone 3G to use while working out. So I'll dust off my elliptical trainer and stationary bike and start exercising with my iPhone