Aqua Sphere Zip Fins Size Chart
  SM MD LG
US Men's shoe size 4-7 7-10 10-13
US Women's shoe size 6-9 9-12 12-14
European Men's shoe size 35-40 40-44 44-48
Length (inches) 14 overall, 8 blade 14 overall, 8 blade 14 overall, 8 blade
Width (inches) 12 12 12
Weight (pounds per pair) 3 3 3

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