Technical sheet

C4 Storm Diving Fins

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19 Reviews

21 Questions

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Features of C4 Storm

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

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.

Specifications

Manual

Size chart

Technical specifications of C4 Storm

Rigidity

Soft
Foot pocket type

Full Foot
Blade length

10 cm Shorter Than Standard
Water rails

Yes
Weight

250 grams
Strap

Closed foot pocket
Color

Black
Age

Adult
Materials

Fiber
Recommended Use

Spear Fishing

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

Key differentiators

100% Made in Italy, ensuring quality craftsmanship and materials.

Designed with water rails on the blade to prevent drifting and improve control.

Engineered with the lightweight 250 footpocket, weighing only 250 grams for reduced fatigue.

Features a soft, reactive technopolymer blade with a high elastic return for efficient propulsion.

Optimized for shallow water use (0-18m), making them suitable for novices and experienced spearfishers.

Technology in C4 Storm Diving Fins

Energy rating

Warnings

4.84 / 5

19 Reviews

What our customers are saying about C4 Storm Diving Fins

Discover comfortable, lightweight, and flexible fins perfect for snorkeling and freediving. Experience fluid finning and excellent performance with these durable plastic fins. Ideal for pool training or reef exploration, they offer good gliding and maneuverability. The soft rubber foot pocket ensures comfort, though some recommend sizing up for a better fit, especially with socks. These high-quality fins provide great value for their performance

First Purchase

2026/10/01

Davide

Everything perfect, almost, fins slightly scratched, packaging correct

Exceptional

2026/05/24

Diego

Absurd price-quality ratio, best fins for their price range, ideal for those who practice fishing in shallow waters

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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Include AI Generated questions and answers

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.

* Generated by AI based on customer and product data

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.

* Generated by AI based on customer and product data

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.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

What are the key features of the C4 Storm Diving Fins?

Answer of Generated by AI and verified

The C4 Storm fins are designed for agility and efficiency in the water. They feature a soft, reactive, and durable technopolymer blade that is 10 cm shorter than standard spearfishing fins. The design includes water rails to prevent drift and a lightweight 250 footpocket made from TPE 75 ShA polymer for comfortable and efficient energy transfer.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

Are the C4 Storm fins made in Italy?

Answer of Generated by AI and verified

Yes, the C4 Storm Diving Fins are 100% made in Italy. Both the blades and the 250 footpockets are manufactured at the C4 plant in Italy.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

Do the C4 Storm fins have adjustable straps?

Answer of Generated by AI and verified

No, these fins do not come with adjustable straps. They feature a full-foot pocket design.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

Are the C4 Storm Diving Fins worth buying for beginners?

Answer of Generated by AI and verified

The C4 Storm Diving Fins are ideal for beginners due to their soft, reactive blades and lightweight design, making them easy to maneuver in shallow waters. They offer a comfortable fit and efficient energy transfer, enhancing the diving experience.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

What material is used for the foot pocket of the Storm fins?

Answer of Generated by AI and verified

The model 250 foot pocket is made from a TPE 75 ShA polymer, which is selected to enhance energy transmission to the blade for a more efficient kick.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

What is the weight and length of the C4 Storm fin blade?

Answer of Generated by AI and verified

Each C4 Storm fin weighs 250 grams. The blade has a length of 10 cm, which is shorter than standard fins to provide enhanced agility.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

What is the buoyancy of the C4 Storm fins?

Answer of Generated by AI and verified

These fins have a neutral buoyancy characteristic.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

What activities are the C4 Storm fins recommended for?

Answer of Generated by AI and verified

These fins are specifically recommended for spearfishing. Their design is ideal for both novices and experienced divers operating in shallow waters from 0 to 18 meters.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

Are the C4 Storm fins suitable for beginners?

Answer of Generated by AI and verified

Yes, the product information indicates that these fins are perfect for novices as well as experienced divers and spearfishers in shallow water environments (0-18m).

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

What is the suitable water depth for using these fins?

Answer of Generated by AI and verified

The C4 Storm fins are designed for optimal performance in shallow waters, specifically at depths ranging from 0 to 18 meters.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

Are these fins for men or women?

Answer of Generated by AI and verified

The C4 Storm Diving Fins are designed as a unisex product, suitable for all genders.

* Generated by AI based on customer and product data

2026-11-08

Generated by AI and verified

How do the C4 Storm Diving Fins compare to the Cressi Frog Plus Diving Fins?

Answer of Generated by AI and verified

While specific specs for the Cressi Frog Plus Diving Fins are not available, the C4 Storm Diving Fins are designed with a soft, reactive blade and a lightweight foot pocket, making them suitable for shallow water diving and spearfishing.

* Generated by AI based on customer and product data

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

* Generated by AI based on customer and product data

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

* Generated by AI based on customer and product data

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.

* Generated by AI based on customer and product data

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.

* Generated by AI based on customer and product data

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).

* Generated by AI based on customer and product data

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

* Generated by AI based on customer and product data

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Frequently bought together

Best sellers

Use cases

Shallow Water Spearfishing 100% Fit

These fins are specifically recommended for spearfishing and are designed for optimal performance in shallow waters up to 18 meters. Their neutral buoyancy and reactive blade provide the control and power needed for this activity.

Recommended for Spearfishing,Suitable for depths of 0-18m,Soft, reactive blade,Neutral buoyancy

Recreational Snorkeling & Diving for Beginners 90% Fit

With a design suitable for novices and a depth range of 0-18 meters, these fins are a great choice for casual snorkeling or beginner diving. The soft, durable blade is easy to use and provides reliable propulsion without requiring advanced technique.

Perfect for novices,Water depth suitability of 0-18m,Soft and durable blade,Foot pocket model 250

Underwater Exploration in Calm Waters 80% Fit

The fins' blade features water rails to prevent drifting, enhancing stability and control while exploring. This makes them well-suited for calmly exploring reefs and underwater landscapes in shallow coastal areas.

Water rails prevent drift,High elastic return blade,Neutral buoyancy,Lightweight design (250 grams)

Dive Training in Pools or Confined Water 70% Fit

The short 10 cm blade length and soft, reactive material make these fins manageable and effective for training exercises in a pool or other confined water environments. They allow new divers to practice kicking techniques without the bulk of longer fins.

Fin length of 10 cm,Soft, reactive blade,Durable TPE 75 ShA polymer construction,Suitable for novices

Best for

Ideal for Novice Spearfishing

These fins are specifically recommended for spearfishing and are designed for use in shallow waters up to 18 meters, making them a great starting point. The durable TPE 75 ShA polymer construction and blade design, which offers high elastic return and resistance to breakage, provide the reliability needed when learning.

Based on: recommended_use: Spear Fishing, Water depth suitability: 0-18m (perfect for novices and experienced divers in shallow waters (0-18m)), Polymer type: TPE 75 ShA, Blade features: durable, high elastic return, strong resistance to breakage

Great for Casual Shallow Water Diving

Perfect for hobbyists, these fins are designed for shallow water diving. The foot pocket is made from a TPE 75 ShA polymer, and the blade is soft and reactive, providing comfort and ease of use for casual exploration without the complexity of adjustable straps.

Based on: water_depth_suitability: 0-18m (perfect for novices and experienced divers in shallow waters (0-18m)), Foot pocket polymer: TPE 75 ShA polymer, Blade features: soft, reactive, Adjustable straps: no

Excellent for Aquatic Fitness

Designed for propulsion, these fins feature a reactive blade with water rails to prevent drift, helping you maintain an efficient kick. The neutral buoyancy and supportive foot pocket make them a solid choice for fitness routines in the pool or shallow open water.

Based on: Top Benefit: Aquatic Fitness & Wellness, Top Benefit: Propulsion & Speed, Blade features: reactive, water rails prevent drift, Buoyancy: neutral

Benefits

FunctionalMaximize Energy Transfer for an Efficient Kick

Engineered for a highly efficient kick, these fins feature the innovative 250 footpocket. It utilizes a specialized TPE 75 ShA polymer designed to maximize the energy transfer from your foot to the blade, helping you move through the water with less effort.

Foot pocket model: 250

Foot pocket polymer: TPE 75 ShA polymer

FunctionalPrevent Drift for Superior Control

Experience superior control and performance in the water. The fin blades are equipped with integrated water rails that are specifically designed to prevent the fin from drifting sideways during your kick cycle, ensuring your movements are more direct and effective.

Blade features: soft

reactive

durable

high elastic return

strong resistance to breakage

water rails prevent drift

FunctionalOptimized for Shallow Water Diving and Spearfishing

These fins are perfectly suited for both novices and experienced divers operating in shallow waters. Their design is optimized for performance at depths from 0-18 meters, making them an ideal choice for spearfishing and freediving close to the shore.

Water depth suitability: 0-18m (perfect for novices and experienced divers in shallow waters (0-18m))

Recommended use: Spear Fishing

FunctionalExperience Premium Italian Manufacturing

Embodying a commitment to quality, these fins are 100% made in Italy. Every component, from the 250 footpockets to the STORM blades, is manufactured entirely at the C4 plant in Italy, reflecting a heritage of premium craftsmanship and design.

Country of origin: Italy

Country of manufacture: Italy

Ideal buyer profiles

Spearfishing Adventurer

This individual is passionate about spearfishing and seeks gear that offers reliability, performance, and durability for their underwater hunts. They need fins that provide a reactive kick for quick maneuvers while remaining efficient for stalking prey in shallow to medium depths.

The C4 Storm fins are explicitly recommended for spearfishing. Their blade is engineered to be soft, reactive, and durable, with a high elastic return for powerful movements. The integrated water rails help prevent lateral drift, which is crucial for stability when aiming. These fins are optimized for the 0-18 meter depth range, making them a perfect match for common spearfishing environments.

Occasional Diving Hobbyist

This diver enjoys exploring underwater environments but doesn't require expedition-grade equipment. They value comfortable, easy-to-use gear that performs well for recreational dives in calm, shallow waters. Efficiency and reliability are more important than top-end speed.

These fins are ideal for novices and experienced divers in shallow waters up to 18 meters. The soft, reactive blade provides propulsion without requiring excessive effort, and the neutral buoyancy is manageable for recreational diving. Weighing only 250 grams, they are lightweight and easy to travel with for dive trips.

Competitive features

When choosing the right diving fins, it's important to understand how different models stack up. We're comparing the C4 Storm Diving Fins against several popular alternatives, including the Salvimar Nobilis, Scubapro Jet Club, Seac Speed, Cressi Agua Pro, and Typhoon T Jet Diving Fins. This analysis will focus on key features to help you find the perfect fins for your underwater adventures.

Where it excels

The C4 Storm fins are specifically designed for agility and performance in shallow waters, with a recommended depth of 0-18 meters, making them ideal for their intended use. Featuring a blade that is 10 cm shorter than standard spearfishing fins, they offer enhanced maneuverability for spearfishing and freediving in confined spaces. Constructed with a soft, reactive TPE 75 ShA polymer, the fins provide a high elastic return for an efficient kick, maximizing energy transfer from the lightweight 250 footpocket. Integrated water rails on the blade help prevent lateral drift, offering superior control and stability during dives.

Consider alternatives if...

Verdict

The C4 Storm Diving Fins are an excellent choice for divers who prioritize agility and efficiency in shallow-water environments. Manufactured in Italy, they feature a unique shorter blade design and a lightweight, comfortable footpocket that delivers a reactive and controlled kick. While they are specialized for spearfishing and freediving at depths up to 18 meters, their design is also suitable for novices. If your activities are focused within these shallow depths, the C4 Storm offers a compelling combination of performance and maneuverability.

Specs comparison