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Finis Foil Monofin

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Try something new with these innovative swim fins from Finis. The Foil Monofin single blade design creates a powerful dolphin kick and promotes an equal use of down and up kicking for propulsion throughout the entire dolphin kick motion. Open toe and heel swim fins fit a wide range of foot sizes.

Comfortable for all ages and abilities.

Rubber Blade for safety while sharing a lane.

XS - Men's 3-5, Women's 4.5-6.5
S - Men's 5.5-8, Women's 7-9.5
M - Men's 8.5-10, Women's 10-11.5
L - Men's 10.5-13, Women's 12-15.5
XL - Men's 13.5-15

* To prevent rubbing and blisters, order your current shoe size for a snug and secure fit. If between sizes, a Kiefer Lycra Sock will prevent rubbing and add comfort. Wet fins for fitting - dry fitting is not recommended. Kiefer will exchange or refund your fin purchase if when tried on in the water, the fit does not meet your expectations. Returns will only be excepted with dry fins in packaging as was received. (Cut, torn, or ripped packaging will not be accepted).

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Swim Fins

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Free Standard Shipping on orders of $99 or more.*

* Restrictions Apply: Valid for Kiefer catalog and online prices on orders receiving Standard shipping to the lower 48 states. Items that ship oversize or via truck are expressly excluded. Please select “Standard Shipping” when choosing your shipping method during Checkout.


We think you'll love what you ordered. But in case you don't - perhaps it doesn’t fit right or just wasn’t what you were hoping for - we'll send you a new or different size, color, style or item or issue you a quick refund. You have up to 60 days to return items with the following exceptions.