I got this pair for my 8-yo son. He wears Size 4. I got Size 5 hoping he will grow into it soon. Well, Size 5 was HUGE and my feet fit in! I wear women's Size 8.5 to 9!
The sizing chart is way off. I got this pair at very good price ($25), and my son loved this pair, so I decided to keep for the future use. It is frustrating with this brand because I got another pair Tsukihoshi Youth Phoenix. Vivid and nice colour and quality but again way too big. The sizing chart was totally useless.