This table shows the measurements of the insoles that go inside the sneakers (in millimeters). To find your size, remove the insole from a pair of sneakers at home, measure it, and compare it with ours. 

EUR 36 37 38 39 40 41
USA 6 6,5 7,5 8 9 10
UK 3 4 5 6 7 8
Length (mm) 236 242 253 257 263 273
Width(mm) 80 80 84 86 86 87