DEFEET Aireator Cuff  Bike Socks Black Purple Yellow Ridin' With Hoby L M S

Small

European 36-39.5  Women 6-8

Medium

European 40-42.5  Men 7-9  Women 8.5-10.5

Large

European 43-45.5  Men 9.5-11.5  Women 11-13

X-Large

European 46+  Men 12+