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Swimming with fins is an important way to develop your kick and build leg strength.
Read this guide and learn how to get the perfect fit, every time.
Can selecting your swimming fin size be as straightforward as checking your shoe size?
Not always, but fitting fins shouldn’t be challenging or frustrating.
Start by choosing fin size based on your shoe size. If you wear a size 10 in your daily shoes, begin with a size 10 swimming fin.
Upon receiving your fins, or during your visit to a Kiefer Swim Shop, make a visual comparison by aligning the sole of your shoe with the sole of your fin.
It’s OK for toes to show in the fin’s foot pocket window, but make sure that your toes do not protrude from the foot pocket window.
If you are fitting fins dry, inserting your feet into the swim fin foot pocket is met with ample resistance. Some new fins are “greased” or “powdered” and may not present this issue, but most swimming fins are not.
Struggling to enter dry fins may cause you to “size up” unnecessarily, resulting in floppy fins that are inappropriately loose in water.
The ultimate approach to fitting swim fins is fitting them in the water and taking them for a spin in the pool.
Fins should fit snugly; if you can fit multiple fingers in the space between fin and skin they are too big. Fins should not be loose. A loose fin will cause chaffing and likely painful blisters in the long run.
If you find that your feet fall between fin sizes, don’t give up! Grab Kiefer Lycra Socks to fill the gaps. They will add padding and comfort and eliminate uncomfortable rubbing.
We want swimmers to be happy with the fit of their Kiefer Swim Fins.
Save your receipt! If you are unhappy with the fit of your fins, follow Kiefer’s Returns procedure to exchange/refund fins fit in the water that do not meet your fit expectations.
There is a good fit for everyone out there. Don’t let one bad fit get you down – try our selection of swim fins to discover what works the best for you and your swim training.
Looking for help choosing a swim fin style? Check out our blog post on how to choose swim fins.
Emily Milak is a lifetime competitive swimmer living in Southeastern Wisconsin. Emily is a US National Team champion, NCAA champion, and USMS champion with extensive coaching experience. She is a product development consultant at Kiefer.
I’m looking for fins to use in rehabilitation from Ankle Surgery.
Length of feet 11 1/4 inches long. Width of feet 4 1/2 inches wide. Height of feet at the 4 1/2 inch point – one and ahalf inch thick.
Prefer closed heel, And a relatively flexible fin rather than a stiff fin.
Silicone could be the best, for flexibility Around the foot.
Thank you,
Ed Maurina
Ed [email protected]
I am buying on line. Want to see if snorkeling is for me without spending a lot. The sizing described in the ads don’t seem to relate to shoe sizes. If it says size 3-5 but doesn’t say “kids” what shoe size is it? Sometimes it says adult size medium 7 to 10. Would my size 9, 91/2 shoe size match with that size? Thanks
Hi – I am finding it very difficult to find a short swim fin to fit my daughters very narrow foot! Do you have any recommendations? She is a size UK 2
I’m 82 yrs old in good health. I used to swim a lot until I had an unrelated shoulder injury. I was a casual swimmer. I would like to get back to swimming but my legs seem weak. I do water aerobics and walk the lazy riber
My son wears a size 10 toddler. (He’s 4yo.) What size would fit him in your flippers?
Is there a swim fin that is a 15 or 16 in comparison to a mans shoes size ?
I have size 9 shoes. Why isn’t their a small-xl chart that shows what size fins = size 9 feet?
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