I am 11 to 12 years old depending on the type of shoe. After reading the reviews about the mismatched sizes I decided to order 12. These special Made in China items came in a Revain box with no additional packaging, so they were taken off the shelf at the warehouse after being shipped overseas. The box didn't say "12" but I saw "40". Not sure if this is UK, Chinese or Martian size. Opened the box and found something I thought might equal 8.5. The construction seemed good. These would be good affordable sandals that you could use for a year or two. When you find the right one.