In plain English: The part is made of “other materials” — everything that isn't leather, coated leather, or textile. In practice: synthetics like PU and PVC, rubber, EVA foam, and plastics.
What it looks like on the labelAn open diamond (lozenge) shape on its own — no hide, no weave pattern.

What to do

What happens if you ignore it

The materials are low-maintenance, but the failure mode is permanent: heat warps foam and PU, and solvent “cleaning hacks” (acetone, magic erasers used hard) eat the surface. Gentle and damp wins.

Where you'll see it

Most soles (rubber, EVA), vegan-leather uppers, sport sandals, rain boots, and many budget sneakers.

Common questions

Does the diamond symbol mean the shoes are vegan?

It means that PART contains no leather or textile — usually synthetic. For fully vegan shoes, check that every row (upper, lining, sole) avoids the hide symbols; note that adhesives aren't covered by the label at all.

Is “other materials” lower quality than leather?

Not inherently — high-end performance shoes are mostly synthetics and foams by design. The symbol describes material family, not quality.

Related symbols

Or just scan the tongue tag

CareLabl scans shoe labels too. Point your camera at the tongue tag and get the upper, lining, and sole materials plus a care routine — then scan the outside for cleaning steps matched to the condition you're actually looking at. Try Pro free for 3 days, no credit card needed.

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