• SIZE CHARTS*
  • US
  • EU
  • UK
Kids Waist Size
Small
6 110-122 6
22 - 23 in 56-58,5 cm 56-58,5 cm
Medium
8 122-134 8
23 - 24 in 58,5-61 cm 58,5-61 cm
Large
10 134-143 10
24 - 25 in 61-63,5 cm 61-63,5 cm
X-Large*
12 143-152 12
25 - 26 in 63,5-66 cm 63,5-66 cm
* Youth XL (143-152) equivalent to EU Adult XXS (~30-34)
ADULT Waist Size
X-Small
0-2 30-32 2-4
26 - 28.5 in 66-72,5 cm 66-72,5 cm
Small
4-6 34-36 6-8
28.5 - 31 in 72,5-78 cm 72,5-78 cm
Medium
8-10 38-40 10-12
31 - 33.5 in 78-85 cm 78-85 cm
Large
12-14 42-44 14-16
33.5 - 36 in 85-91,5 cm 85-91,5 cm
X-Large*
16-18 46-48 18-20
36 - 38.5 in 91,5-98 cm 91,5-98 cm
XXL*
20-22 50-52 22-24
38.5 - 42 in 98-104 cm 98-104 cm
TODDLER Waist Size
3T
98-107 3-4
20 - 21 in 51-53,5 cm 51-53,5 cm
5T
107-116 5-6
21 - 22 in 53,5-56 cm 53,5-56 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