Ultimate Addons Easy Fit Waterproof Motorcycle Mount for Apple iPhone 4S (sku 13364) Apple iPhone 4S Weather Resistant Waterproof Case with Motorcycle, Motorbike, Bicycle, Bike Handlebar Mount. Hinged mount fits handlebars with a diameter between 21mm - 30mm. No tools required to fit. Slim, lightweight case keeps your Apple iPhone 4S secure and dry. Touch sensitive front film allows your iPhone screen to be accessed while in the case. Internal dimensions: 125mm x 63mm Double Zipper access. Features: Fully adjustable - end can be turned 360 degrees. Handlebar casing is lined to protect bars and reduce vibration. This casing is in two parts and is removable if required. Simple one screw fixing makes fitting quick and easy. Press button release means the case to be completely removed from the handlebar mount at the touch of a button, a great security feature. Includes a soft webbed non-chaffing lanyard with safety break.