See by Chloé Size Guide

EU	CM
35	22.4
35.5	22.7
36	23
36.5	23.4
37	23.7
37.5	23.7
38	24.4
38.5	24.7
39	25
39.5	25.4
40	25.7
40.5	26
41	26.4
41.5	26.7
42	27
42.5	27.4
43	27.7