Cressi Fins Size Chart
  12.5-13.5 (Kid's) 1-2 2.5-3.5 4-5 5.5-6.5 7-8 8.5-9.5 10-11
Men's US Shoe Size 12.5-13.5 (Kid's) 1-2 2.5-3.5 4-5 5.5-6.5 7-8 8.5-9.5 10-11
Women's US Shoe Size N/A 3-4 4.5-5.5 6-7 7.5-8.5 9-10 10.5-11.5 12-13
European Shoe Size 31-32 33-34 35-36 37-38 39-40 41-42 43-44 45-46

These are general guidelines only, sizes are not guaranteed. But no worries, since at LeisurePro we offer our exclusive PFF Guaranty