Pro.Fit International BK-4R iPhone 4/4S Bike Mount and Holder
This two-piece kit combines a handy mount and secure holder that will keep your iPhone 4/4S strapped safely to your handlebars or stem as you ride. It's great for road, mountain, or commuter bikes. The Pro.Fit mount provides a secure base, while the holder grips your iPhone securely. A wrap-around, flexible safety strap keeps ensures that it will stay in place.  Not compatible with Skins or Cases.