size L, UK: 9.5-11.5; US (male): 10.5-12.5; US (female): 11.5-13.5

size M, UK: 6-8.5; US (male): 7-9.5; US (female): 8-10.5

size S, UK: 4-6; US (male): 5-6.5; US (female): 6-7.5

size XL, UK: 12.5-15.5; US (male): 13.5-16.5; US (female): 14.5-17.5