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Size Chart

US Size CM (Length) WHY&CO Size
8 25.4 37
8.5 26.0 38
9 26.6 39
9.5 27.0 40
10 27.3 41
10.5 27.7 42
11 28.1 43
11.5 28.5 44
12 28.9 45
Note on Width: WHY&CO follows a D width (standard men's medium) rather than narrow (C). If your foot length-to-width ratio is larger (wide feet), we recommend sizing up by 2 sizes per width increment.