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Trainfins Long Swimming Fins

Sale price: $24.99 Regular price:

Want to work on your legs and swim quicker? These long swim fins provide excellent propulsion. Ideal for sweeping and less frequent movements.

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Sale price: $24.99 Regular price:

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San Francisco, 735 Market St. Options

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Model: 8394334

Product Videos

Product Features

A photo of the Trainfins Long Swimming Fins in use

Trainfins Long Swimming Fins | Our design teams have developed this swim fin for intermediate swimmers who swim regularly and want to work on their legs and speed.

Want to work on your legs and swim quicker? These long swim fins provide excellent propulsion. Ideal for sweeping and less frequent movements.


Feel yourself move a lot quicker through the water because of the short blade

Muscular workout

Work on your leg muscles at a good intensity with the short blade

Product Customer Reviews

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Trainfins Long Swimming Fins,black
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Great product

Really like this product and would recommend it to a friend

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It does the job and is very comfortable.

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Fit perfectly

This swim fins is very good for my boy. It is fit perfectly.

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These are great! Bought them for my 6yr old for Christmas. She loves them

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Good fins

Good fins, comfortable.

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great product and service

great fins, great service - recommended to use decathalon always!

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Long fins

The fit is narrow for my feet. I used this product once as it was so uncomfortable so can’t comment on muscular workout.

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Great quality and price

Really impressed with these fins. Will be buying again as my daughter grows.

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My grandson has outgrown his training fins. Extra Christmas present.

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Great fins

Bought this for my sons swimming, he have been using it for a while and it’s good and he is happy with it.

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Great training aid

Great fitting fins

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Great product!

Bought for my daughter, fit perfectly!

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Long Fins

Good product ideal for teaching finning skills

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Love it

The fins are very comfortable to wear. The rubber is soft and follow my feet, help a lot to build up thigh muscles.

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Size Guide

Size Guide Visual

Additional Product Information


Fin blade: 100.0% Styrene Ethylene Butadiene Styrene ; Fin shoe: 100.0% Styrene Ethylene Butadiene Styrene

What are swim fins for?

A fin are a piece of swimming training equipment to work the lower body. You can simultaneously work on your heart rate and lower-body strength training (thighs, glutes, calves, core stability).

Fin length

Long Fins - Kids 12.5C/13C: 12.6”- Kids 1/2: 14.2”- Kids 2.5/3.5: 14.2”- Kids 4/5; W 5.5/6.5: 15.7”- Kids 6/6.5; W 7.5/8: 15.7”- W 9/9.5; M 7.5/8: 17.3”- W 10.5/11; M 9/9.5: 17.3”- M 10.5/11.5: 18.9”- M 12/13: 18.9”Short blade guarantees a good kick frequency and a good cardio workout. Movements are very close to “natural” swimming movements. The long blade guarantees a more sweeping kick and a stronger muscle workout.

Fin stiffness

Semi-rigid finsThe stiffer a blade is, the more important muscular exertion will be.The more flexible a blade is, the more efficient and sweeping the kick will be. Your muscular energy will generate the type of effort you’re looking for (cardiovascular or muscular effort)


Full footFin foot pockets hold the foot in place when kicking (important for an efficient kick). The open foot pocket means the ankle can move more freelyThe closed foot pocket supports the foot in its natural position

Your 1st time using a fin?

Be careful not to start too quickly! The use of the fins should progressively increase to let the legs and feet adjust and get stronger and to avoid hurting the Achilles tendon.

Storage instructions

Store swim fins in a dry place.



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