size L, UK: 7.5-8.5; US (male): 8.5-9.5; US (female): 9.5-10.5

size M, UK: 5.5-7; US (male): 6.5-8; US (female): 7.5-9

size S, UK: 3-4.5; US (male): 4-5.5; US (female): 5-6.5

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