C4 Storm Diving Fins

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17 Reviews

9 Questions

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Features of C4 Storm

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Specifications C4 Storm

Features of C4 Storm

Strap Closed foot pocket

Strap

Closed foot pocket

Color Black

Color

Black

Age Adult

Age

Adult

Materials Fiber

Materials

Fiber

Recommended Use Spear Fishing

Recommended Use

Spear Fishing

Product description of C4 Storm Diving Fins

Description summary

Experience Italian craftsmanship with the C4 Storm fins, perfect for novices and experienced divers in shallow waters (0-18m). These fins feature a soft, reactive, and durable technopolymer blade, 10cm shorter for enhanced agility. The revolutionary 250 footpocket is exceptionally lightweight and comfortable, using a special polymer to maximize energy transfer for a highly efficient kick. Water rails prevent drift, ensuring superior performance and control. 100% Made in Italy for your next underwater adventure

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Manufactured entirely at C4 plant in Italy, STORM fins are made by over- molding a technopolymer blade with 250 footpockets.

These fins are ideal not only for diving novices but also for experienced spearos and freedivers who spearfish in shallow waters (0-18mt).

Storm fins feature a comfortable foot pocket, a soft and reactive blade but 10 cm shorter than the standard length featured on spearfishing fins.

FOOTPOCKETS 250.

STORM fins are equipped with the new 250 footpockets.

Thanks to the use of a TPE 75 ShA polymer, the energy transmission of the 250 footpocket to the blade in increased, thus obtaining highly efficient fins.

The study of the geometries has allowed us to obtain minimum thicknesses, allowing the weight of the 250 liner in size 41/42 to be reduced to just 250 grams.

FIN BLADE.

We have sourced and tested a specific polymer to obtain a soft blade with high elastic return and strong resistance to breakage.

The presence of water rails in the final part of the blade prevents the fin from drifting during the kick, thus improving performance.

100% MADE IN ITALY.

All C4 carbon fiber blades have always been entirely manufactured in our production plant in Italy.

Starting this year, a new plastic injection department has been added at C4 plant and this is where the 250 footpockets and STORM blades are manufactured.

MB fins are a 100% MADE IN ITALY by C4.

All C4 carbon fiber blades have always been entirely manufactured in our production plant in Italy.

Starting this year, a new plastic injection department has been added at C4 plant and this is where the 250 footpockets are also manufactured.

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What our customers are saying about C4 Storm Diving Fins

These high-quality fins deliver excellent performance for snorkeling, freediving, and pool training. Praised for being lightweight and maneuverable, they provide fast, fluid propulsion and an efficient glide. The blades offer balanced flexibility, making them suitable for various activities. The ergonomic foot pocket is comfortable and enveloping, though it can run small. A solid, well-made, and functional fin that is great value for its performance

Comfortable fin and friendly customer service

2025/11/13

Judith

I wear a size 40/41 shoe and ordered the fins one size larger: 41/42, as I like to dive with socks. The fins are super comfortable. The rubber foot pocket is really soft! I'm also really surprised how quickly the delivery arrived in Germany. Five stars for that too. I had previously ordered another pair of fins, which I unfortunately had to return... The return process was also hassle-free. And the customer support is really friendly and responded within a few hours/minutes. Best regards

Comfortable

2025/07/13

Igor

Very, very comfortable fins for being made of plastic, very easy to move with the current,

Great product

2025/02/24

Carla

On the advice of the instructor, I bought these fins. Excellent product. I recommend one size larger than the one you usually use, because the foot pocket is really small.

Are ok

2025/02/11

Pee

The fins are ok.

Good product

2024/11/15

Tateos

I haven't tried them yet, but they seem very light and I imagine they will do a great job. For those who want lighter and slightly more maneuverable fins. Perfect for reefs.

C4 storm

2024/09/26

Fréd

swimming in the pool is perfect, they are not flexible, I would say medium, the fit is good for the size but if you have thin feet like me, consider wearing slippers.

I love!

2024/08/20

Aleksandra

I am delighted with the fins! They are light, quite flexible. I wear shoes in size 37, I ordered fins 38/39 and they are good for bare feet. I have a slightly wide foot and at first I thought they would rub a little, but nothing like that happens. I use them for snorkeling and freediving in cold lake waters. In my opinion, they swim lightly and efficiently.

Nice fin

2024/08/17

Amin

Light weight fin

Respect

2024/08/04

Podvox

The fins are of excellent quality, after testing them in the pool I was surprised again that they are fast as a storm, fast delivery, I will order more!

Fairly flexible fins

2024/08/02

Jean Noël

Fins met my expectations. The sails are quite flexible and allow good gliding. Satisfied with this product

Excelente

2024/07/16

Toni

Las mejores aletas de plastico , muy ligera y funcional. Espero que duren mucho tiempo

Unreliable fit

2024/04/06

Marco

The fins are very well made. Suitable for training in the pool and for fishing in shallow and medium seabed. The shoe is very ergonomic and enveloping. Unfortunately, the descriptions on the buyers' website regarding the size and fit are totally incorrect. I recommend purchasing a larger size if you want to wear them with a 2/3 mm fit. I wear size 43 and when I buy size 42/43 they are too small for me without the shoe! I had to change them.

Lightness and good tone

2024/03/29

Jean Noël

These fins have good performance. They are light, flexible, and make finning very fluid.

Great product and excellent service

2024/03/03

Corrado Carbone

Super fins and super professional delivery. Highly recommended.

First impression

2024/03/01

Pascal

They make a very solid impression. I wear shoe size 44 in everyday life. I ordered these fins in size 42/43 and they fit perfectly. I don't wear neoprene socks. I will test it soon and then edit my review and provide further information.

Surprised

2023/11/26

Marcio

Incredible product for the value.

Storm

2023/11/15

N. Gomes

Quality fins, light and positively buoyant. Shipping within the established deadline.

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Stiffness/Hardness

2025/06/26

Gever John

What is the stiffness of the blades? Soft or Medium?

Answer of Aleksandar

Best you can buy for that money for beginner or someone who dont intent to use it too often or seriously y. Foot pocket is comfy. Blade is not to stiff. Bought for my wife who use it maybe three times a a year. I have for myself Alchemy carbon fins but thats incomparable price or performance wise however im pretty serious about it.

Answer of ARUNAS

Stiffness is medium.

Fin

2024/12/05

Gilson

Good morning, how many cm is the fin high? 65 or less?

Answer of CARLOS

The maximum fin length for size 40/41 is 76/77 cm. The maximum blade width is approximately 19.5 cm. I recommend these fins as they have good performance.

Size C4 storm diving fins

2024/11/16

ARBI

Hi Sir/Madam, May i know detail size C4 Storm Diving Fins in Length x Width x Height ? thanks

Answer of Antonio

Length including shoe size 43/44 cm. 79. Maximum width 19.5 cm. Height when stretched out 12 cm.

Blade

2024/07/28

Francisco

I am starting out in scuba diving. I would like to know if at a certain point I could replace the storm blades with more professional ones while maintaining the foot pocket. thank you so much

Answer of CARLOS

It is not possible to replace the blades because the fins are entire. For the price and performance, I recommend purchasing these fins by checking the size on the C4 website, which is given in mm, which is quite reliable.

Answer of fabio

Material

2024/05/12

Javier

What material are they made of?

Answer of marco

the fins are made of technopolymer (plastic). They are not particularly hard. Ideal for swimming pools and fishing in shallow and medium depths (0-20 metres).

Size advice

2024/04/05

Marco

I wear the 43/44 but ordering according to the size chart and the reviews on the site, I got the 42/43 but they are too small for me and I have to return them. I usually wear fins with 3mm socks. What number do you recommend? 43/44 or 44/45?

Answer of davide

Hi, I recommend 43/44, I have the same number as you

Answer of fabio

like your 43/44 fit

Measure

2024/03/29

Giuseppe Di Gregorio

Good morning, I wear number 43 as my shoe size. What size should I buy considering a 3 mm fit? Many thanks in advance

Answer of Denis

One size smaller, I have a 43 with a 5 size fit, they are comfortable. But 3 yi I recommend a size smaller as they fit comfortably

Answer of Jean Noël

Hello, I wear a size 42.5 and I wear my fins with 3mm liners. I chose these fins in size 44/45 and they fit very well. Sincerely

Weight

2024/02/09

Rodrigo Silvestre

What is the individual weight of each one for number 45? Are they made of carbon?

Answer of CARLOS

They are not made of carbon. As for weight, I have 40/41 and each fin weighs approximately 600 g. For the 45 it will be a few grams (few) more in weight.

Answer of fabio

I don´t know the weight, but they are not carbon.

Answer of Philipp

I'm not sure about the weight but they are pretty light for not being made of carbon fiber.

Fins Information

2024/01/03

John

The blades of the C4 Storm Diving Fins can be changed. or is it only a full one-piece fin that I cannot change the blade on?

Answer of CARLOS

The blades cannot be changed because it is a whole fin.

Answer of fabio

no, the blades cannot be changed, it is a unique piece.

Answer of Philipp

It is a full one-piece fin that you cannot change.

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C4 Storm Diving Fins

Features of C4 Storm

C4 - Fins - Fins

Specifications C4 Storm

Features of C4 Storm

Strap Closed foot pocket

Color Black

Age Adult

Materials Fiber

Recommended Use Spear Fishing

Product description of C4 Storm Diving Fins

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What our customers are saying about C4 Storm Diving Fins