The size chart only for thin-sole style
4.5US Women/3US Men=5.5US Women/4US Men=EU 36-37
6US Women/4.5US Men=7US Women/5.5US Men=EU 38-39
7.5US Women/6US Men=8.5US Women/7US Men=EU 40-41
9US Women/7.5US Men=10US Women/8.5US Men=EU 42-43
10.5US Women/9US Men=11US Women/10.5US Men=EU 44-45
12US Women/11US Men=EU 46
We are a selling team with full enthusiasm and vitality and trying to make every pair of the AVADAR men women water shoes to the best! We always stand behind our customers, if you have any questions, just feel free to contact us!