• SIZE CHARTS*
  • US
  • EU
  • UK
YOUTH waist hips waist to floor
Small
6 110-122 6
22-23" 56-58,5 cm 56-58,5 cm 24-26" 61-66 cm 61-66 cm 23-26.5" 58,5-67,5 cm 58,5-67,5 cm
Medium
8 122-134 8
23-24" 58,5-61 cm 58,5-61 cm 26-28" 66-71 cm 66-71 cm 26.5-30" 67,5-76 cm 67,5-76 cm
Large
10 134-143 10
24-25" 61-63,5 cm 61-63,5 cm 28-30" 71-76 cm 71-76 cm 30-33.5 " 76-85 cm 76-85 cm
X-Large*
12 143-152 12
25-26" 63,5-66 cm 63,5-66 cm 30-32" 76-81,5 cm 76-81,5 cm 33.5-37" 85-94 cm 85-94 cm
* Youth XL (143-152) equivalent to EU Adult XXS (~30-34)
ADULT waist hips waist to floor
X-Small
0-2 30-32 2-4
26-28.5" 66-72,5 cm 66-72,5 cm 33-36" 84-91,5 cm 84-91,5 cm 35-50" 89-127 cm 89-127 cm
Small
4-6 34-36 6-8
28.5-31" 72,5-78 cm 72,5-78 cm 36-39" 91,5-99 cm 91,5-99 cm 35-50" 89-127 cm 89-127 cm
Medium
8-10 38-40 10-12
31-33.5" 78-85 cm 78-85 cm 39-42" 99-106,5 cm 99-106,5 cm 35-50" 89-127 cm 89-127 cm
Large
12-14 42-44 14-16
33.5-36" 85-91,5 cm 85-91,5 cm 42-45" 106,5-114 cm 106,5-114 cm 35-50" 89-127 cm 89-127 cm
X-Large*
16-18 46-48 18-20
36-38.5" 91,5-98 cm 91,5-98 cm 45-48" 114-122 cm 114-122 cm 35-50" 89-127 cm 89-127 cm
XXL*
20-22 50-52 22-24
38.5-42" 98-104 cm 98-104 cm 48-51" 122-130 cm 122-130 cm 35-50" 89-127 cm 89-127 cm
Mermaid Tail Sizing
TODDLER waist waist to floor
3T
98-107 3-4
20-21" 51-53,5 cm 51-53,5 cm 22-24" 56-61 cm 56-61 cm
5T
107-116 5-6
21-22" 53,5-56 cm 53,5-56 cm 24-26" 61-66 cm 61-66 cm
* Not available in all styles/designs
Blue Trim Monofin
Monofin Jr.
Youth Shoe Sizes
US 11 - 7
EU 27.5 - 39
UK 10.5 - 6
*Fits Fin Fun Tail Skin Sizes Youth 6 - 10
Monofin Pro
Women's Shoe Sizes
US 4 - 12
EU 35 - 44
UK 2 - 9.5
Men's Shoe Sizes
US 5 - 10.5
EU 35 - 44
UK 2.5 - 10
*Fits Fin Fun Tail Skin Sizes Youth 12 - Adult XL
Advanced Monofin Pro
Women's Shoe Sizes
US 4 - 12
EU 35 - 44
UK 2 - 9.5
Men's Shoe Sizes
US 5 - 10.5
EU 35 - 44
UK 2.5 - 10
*Fits Fin Fun Tail Skin Sizes Youth 12 - Adult XL
Water Shoe Size Chart
EU Size US Size
28-29 Kid's 8-9
30-31 Kid's 10-11
32-33 Kid's 12-13
34-35 Kid's 1-2
or Women's 5
36-37 Kid's 3-4
or Women's 6-7
38-39 Kid's 5-6
or Women's 7.5-8.5
40-41 Women's 9-10