Happy Platform Sandals Size Chart

US size
UK Size
EU Size
Inner Length (cm) 
5-5.5
2.5-3
36-37
23.5
6-6.5
3.5-4
38-39
24.5
7-8.5
5-6
40-41
25.5
9-9.5
6.5-7
42-43
26.5