Size 5 - 22 cmSize 6 - 23 cmSize 7 - 23.5 cmSize 8 - 24 cmSize 9 - 24.5 cmSize 10 - 25 cmGet your normal size.
For half sizes with wide feet width, chooseone size higher for closed toe and pointed shoes.
Strap is very loose. Not worth 1798. Just buy from Melissa.