Choose the larger size if your size  is between two sizes. 

Product information:

Sole:rubber

Vamp:PU leather

US        EUR        UK        AUS        JPN        KOR
5.5        37.5        5        5        23.5        241
6        38        5.5        5.5        24        245
6.5        38.5        6        6        24.5        248
7        39        6.5        6.5        25        251
7.5        40        7        7        25.5        254
8        41        7.5        7.5        26        257
8.5        42        8        8        26.5        260
9        43        8.5        8.5        27        263
9.5        43.5        9        9        27.5        267
10        44        9.5        9.5        28        270
10.5        44.5        10        10        28.5        273
11        45        10.5        10.5        29        276
11.5        45.5        11        11        29.5        279
12        46        11.5        11.5        30        283
12.5        46.5        12        12        30.5        286