Size: EU 31/ USA 13 Worn in black leather. I have scrubbed the foot pats and cleaned/ conditioned the leather. As you can see these shoes still have a lot of life.Nature is the best teacher in these kids barefoot running shoes. All the while they look like classy shoes too- so perfect for recitals, school, etc. My girls used them for all these activities and sadly they have outgrown them. Take a look at vivobarefoot website for more details about barefoot shoes and size guide. https://www.vivobarefoot.com/us/size-guide