iPhone 4, 4s, 5, 5c, 5s bike mount (also with bumpers)

Here is a customizable iPhone mount for iPhone 4 to iPhone 5s. By default the mount has the size of an iPhone 5 with an Apple bumper but you can customize it to fit an iPhone 5 without bumper or an iPhone 4 (or maybe any other phone, I did not test it yet).
The mount is attached to the bike with cable ties and can be used horizontally or vertically. Even the radius of the bike's tube (is it called so?) can be adjusted.
To save material you can adjust the width of the bridges as well.

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