Spring Footwear Women’s Size Chart:

U.S. 5 5.5-6 6.5-7 7.5-8 8.5 9 9.5-10 10.5-11 11.5-12
Euro 35 36 37 38 39 40 41 42 43

Sprint Footwear Men’s Size Chart:

U.S. 6-6.5 7-7.5 8-8.5 9 9.5-10 10.5-11 11.5-12 12.5
Euro 39 40 41 42 43 44 45 46