The Joy Factory StormCruiser Weather-Resistant Bike Case/Mount for the iPhone 4S/iPhone 4 is the perfect case/mount for all your biking adventures. The StormCruiser can be mounted on the body frame, between the handle bar, or the top tube, any one of your choosing. Use your iPhone 4 with StormCruiser as a GPS, MP3 Player and for you to make phone calls while exercising. The StormCruiser is waterproof, dustproof and grease proof to prevent any harmful substance from getting on your iPhone so you can bike worry-free. The case is scratch resistant so it'll keep up with any terrain trails you take. The StormCruiser Weather-Resistant Bike case/Mount for iPhone 4S/iPhone 4 is the perfect solution to use your iPhone on all your biking adventures.