Size chart Hayabusa Ankle Socks Support 2.0

Size EU US (MEN) UK
SM 39-42 6-9 5.5-8.5
L 43-44 10-11 9.5-10.5
XL 45-46 12-13 11.5-12.5

Take a size larger if you are on the borderline or have wider feet/ankles.