The Fossil Coil bracelet is slightly chunkier - less flexible, but stronger.

The pictures show it made in Alumide (aluminium powder mixed with nylon) which is super futuristic but less springy.

The other picture shows it printed in white strong flexible (pure nylon) that I then dyed bright tomato orange/red. It looks awesome in Shapeways' summer colours too.

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This is very flexible, very bendy. It doesn't actually expand much past it's 55mm diameter, but it's pretty neat!

You wrap it round your wrist to put it on, rather than sliding your hand through it.

This is a version of the polyoptic bangle with a handsome split to fit over larger hands. The central hole is 65mm round, but can open up to about 80mm.