----- Women Size Chart -----
36-37( Inner length: 23cm )(5.5inch)
38-39( Inner length: 24cm )(7inch)
40-41( Inner length: 25cm )(8.5inch)
----- Men Size Chart -----
40-41( Inner length: 25cm )(8.5inch)
42-43( Inner length: 26cm )(10inch)
44-45( Inner length: 27cm )(12inch)