Atoms shoes have a single standard ‘D’ width, so the only way to change their width is to size up or down. Reviewers with wide feet note that this isn’t really an issue, as the TPU upper of the Atoms 000 has a nice amount of stretch to it. The shoe is flexible enough to fit a wider foot and will generally conform to the shape of your foot over time. Plus, if a pair doesn’t suit you, you’ve got 30 days to return them, no questions asked – even if they’ve been worn.