Mermaid Tail Sizing Chart At Aquatails:

The following charts show measurements for our pre-made quality mermaid tails for swimming. If you order a custom mermaid tail, you’ll be able to enter your own measurements.

Aquatails CORRECT US SIZE:

Remember, you can send us your measurements in the Order Notes for a custom-made tail!

SIZE WAIST AT BELLY BUTTON HIPS LENGTH (WAIST TO FLOOR)
Ch XS (ages 3-5) 20”-23” 20”-23” 26”
Ch S (ages 6-9) 21”-24” 24”-27” 32”
Ch M / Ad XS (Ladies (0-2) 23”-26” 26”-29” 35”
Ch L / Ad S (Ladies 4-6) 25”-29” 30”-34” 36.5”
Ad M (Ladies 8-10) 28”-32” 32”-36” 40”
Ad L (Ladies 12-14) 32”-36” 36”-42” 42”
Ad XL (Ladies 16-20) 37”-44” 40”-46” 42”

Monofin Sizes

  • Small Monofin for children ages 3-9 fits US women’s shoe sizes 2-8 with adjustable strap.
  • Medium Monofin for ages 10 and up fits US women’s shoe sizes 2-8 with adjustable strap.
  • Large Monofin fits US women’s shoe sizes 9-13.