One swim fin size fits everyone over about 140cm (4’7”)
The one swim fin size fits kids to adults. Fits all leg shapes. Foot size doesn’t matter. Fits everyone taller than 140 cm (4 ft 7 inches).
There is only one size and model of shinfin™ swim fins. They are so adjustable because they strap to your legs, not to your feet. So you can rely on them fitting you without needing to try them on. They will also keep fitting growing children. They can be shared among different sized people too.
For people a bit shorter than 140cm (4’7”), they still strap on properly and swimming is still good. They will probably just stick out from the toes a bit more. This can make walking a bit trickier, but probably still easier than with foot flippers.
One swim fin size fits all feet
Your foot size doesn’t affect how they fit at all.
Fins bend in to fit thinner legs
If your ankles, shins and/or calf muscles are thin, the straps will bend the fins inwards to fit your leg shape.
Fins bend out to fit broader legs
If your ankles, shins and/or calf muscles are broad, the fins will bend outwards to fit your leg shape.
Longer straps are available
The straps go around the narrowest part of your leg, just above your ankle. If you measure around this narrowest circumference to be 20-40cm (8”-16”) then the standard straps supplied with the swim fins will fit you. Longer straps are seldom needed to fit the normal position on your lower leg. People with lower legs measuring larger than the above circumference will need the longer straps. People fitting swim fins on their thighs (e.g. above-knee amputees) will most likely need the longer straps too. You can select longer straps as you order, for one or both fins in each pair.
Can wear over a wetsuit too
Please check your narrowest leg circumference (as above) whilst wearing your wetsuit, to make sure the straps are long enough to fit over your wetsuit too.