We’ve been using a specially developed cellular elastomeric material in all our OESH shoe soles for several years now. And now we’re 3D printing that material into our Athena sandals. The material is much more expensive than traditional foam used in shoes soles. Moreover, the process to make shoe soles with this material is much more complex. There was a research article in the journal “Nature” this week comparing the long-term mechanical response of a cellular elastomeric solid created with 3D printing to traditional foam. The upshot is that the 3D printed cellular solid performs better than foam. Of course we already knew that. But it’s nice to see independent peer-reviewed research on the subject.