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C4 300 Footpocket
C4

C4 300 Footpocket

Price without code 28.99

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22 Reviews

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Features of C4 300

Product description of C4 300 Footpocket

Description summary

Discover the C4 300, the apex of footpocket design for freedivers and spearfishers. Engineered for ultimate efficiency, it weighs an astonishingly light 316g to minimize fatigue and conserve precious energy. The ergonomic, pre-formed 3° angle and anatomical shape create a seamless, responsive fit that feels like an extension of your body. This eliminates energy loss, ensuring every kick translates into powerful propulsion. Its minimalist, hydrodynamic profile cuts through the water with minimal drag for faster, more fluid movements. Upgrade to the definitive choice for lightweight performance

C4 300 Footpocket: The Apex of Lightweight Performance and Comfort

Discover the revolutionary C4 300 Footpocket, an engineering marvel designed for freedivers and spearfishers who demand nothing less than the ultimate in performance and efficiency. The 300 model represents a paradigm shift in footpocket design, focusing on a single, critical goal: to create the most direct and efficient transfer of energy from the diver´s leg to the fin blade, all while offering unparalleled comfort.

The standout feature of the C4 300 is its extraordinary lightness. Weighing in at a mere 316 grams, it is one of the lightest footpockets on the market. This significant weight reduction is not just a number; it translates directly into reduced fatigue during long dives, allowing you to conserve precious energy and oxygen. The minimal mass means less effort is required for each kick cycle, resulting in smoother, more fluid movements and enhanced overall performance.

Ergonomically crafted to perfection, the 300 footpocket boasts a pre-formed 3° angle. This innovative design aligns the footpocket naturally with the leg´s position during kicking, promoting a more comfortable and powerful fin stroke. This anatomical shape minimizes empty spaces within the footpocket, ensuring a snug, responsive fit that feels like a seamless extension of your own body. This superior connection prevents energy dispersion, guaranteeing that every ounce of your effort is channeled directly into propulsion.

The minimalist and hydrodynamic profile of the C4 300 further enhances its efficiency in the water. By reducing volume and streamlining its shape, the footpocket cuts through the water with minimal drag, allowing for faster ascents and descents. It is the perfect foundation for building a high-performance fin system, designed to be paired with world-class carbon fiber blades to unlock their full potential. When assembled, the combination creates a fin with an optimized total angle for maximum thrust.

Ideal for the discerning diver who seeks to maximize every movement, the C4 300 Footpocket is the definitive choice for upgrading your fin setup. Experience the difference that superior design, extreme lightness, and biomechanical efficiency can make on your next underwater adventure.

Footpocket 300 (1 unit).

Specifications:

The following specifications are representative of a complete fin assembly using the 300 footpocket with a compatible C4 blade:
- Dimensions blade: 1.000x195 mm.
- Angle fin: 29°blade + 3°footpoket = 32°.
- Carbon fiber: MEGAFORCE T 700 - 100% carbon.
- Water rail: constant profile H10.

Assembling Kit not included.

Specifications

Manual

Technical specifications of C4 300

Features of C4 300

Color Brown

Color

Brown

Key differentiators

Constructed from soft polyurethane in an anatomical, full-foot shape for a comfortable and responsive fit.

Designed to provide efficient energy transfer for powerful propulsion.

Engineered with a hydrodynamic profile to minimize drag in the water.

Extremely lightweight design at only 316g to help reduce fatigue.

Technology in C4 300 Footpocket

Energy rating

Warnings

4.77 / 5

22 Reviews

What our customers are saying about C4 300 Footpocket

These flexible, lightweight shoes are praised for their excellent comfort and performance, despite being a bit tight to put on initially. Buyers recommend sizing down for a perfect fit, noting the quality material and great pockets. Some reviewers mention the product being sold individually

C4 300 Footpocket

Excellent

2026/07/30

Antonello

Excellent product, once worn you feel like you have nothing on your feet, very light

C4 300 Footpocket

Sorry

2023/02/09

Walter ,

I thought it came with the screws for the blades. Very cute product.

C4 300 Footpocket

C4

2022/05/28

Yevhen

Excellent shoes, very comfortable, but be careful not to damage them.

C4 300 Footpocket

Too hard

2023/12/30

Isaac

Prefer it softer for easier to wear

C4 300 Footpocket

Lightweight and comfortable

2023/06/16

Pasquale

it's a bit difficult to put on but it's a show on the foot

C4 300 Footpocket

Great pockets

2022/12/20

D

Thin, light, great pockets, universal

C4 300 Footpocket

C4

2022/09/14

Hr user

Arrived on time. They are hard to wear but once it is done they feel just amazing !

C4 300 Footpocket

Excellent shoehorn

2022/01/12

michael seubert

Very good shoe, toppp I wear 41/42 shoes I bought the 43/44 Perfect fit I recommend

C4 300 Footpocket

Good product!

2021/03/17

Nikolai

Flexible and light!! NB! Sold by the piece

C4 300 Footpocket

Shoes

2020/07/23

CARLO

Nice, too tight and thin. It looks like the silicone they use for masks. To insert them I have to bring a shoe horn!

C4 300 Footpocket

C4 footpocket 300 (even)

2019/10/20

marfia

Good product, light, flexible, easy to put on, Quick parcel. Thanks

C4 300 Footpocket

Great and very comfortable

2019/10/02

александр

Material polyurethane, dress heavily, but in operation these are the best galoshes

C4 300 Footpocket

C4 300

2019/09/17

Alexis

Very light excellent material only that they are a bit difficult to put on

C4 300 Footpocket

C4

2019/08/16

Кирилл

My foot size is 42. They fit perfectly with a 7mm toe. A small minus is possible to wear only with a spoon. But it's worth it. Once dressed and do not want to take off. Comes with a spoon and a set of clips and screws for attaching galoshes to the blades

C4 300 Footpocket

Excellent

2024/11/25

Scarpetta

Great shoes, size fits and super soft

C4 300 Footpocket

Awesome

2022/11/09

IIIISMAEL

They are by far the best pants on the market and the ones that make you perform the most.

C4 300 Footpocket

Excellent shoehorn

2022/10/19

michael seubert

Excellent product, a little tight to put on the foot, but very good, it's worth it

C4 300 Footpocket

Super satisfied!

2021/01/11

Extremedna

The quality is very good as described

C4 300 Footpocket

C4 300 foot pocket

2020/07/19

Afizan Safrudin

Received it with good condition and complete with shoe horn and screws for the pocket. Fit nicely with 1.5mm socks cause my feet are a bit smaller for the size, overall was good.. thank you scuba store

C4 300 Footpocket

Waaaaaay too big!

2020/05/24

Jean-Jacques Rousseau

Those footpockets are many sizes too big. I wear size 12 (us), so ordered size 46-47 (11.5-12.5 us). I have over 3 cm behind my heel and over 1cm on each side when I wear them. Make sure to order 4 or 5 shoe sizes smaller than you normally wear.

C4 300 Footpocket

One foot was missing

2026/02/16

yerko peña

After waiting two months for my order to arrive, when I opened the package there was only one foot. As a consumer, one always expects to receive a pair; we all have two feet. What a shame about the service.

C4 300 Footpocket

The best!!!!

2021/11/08

Alexandre Mello

It gives a little work to put on, but the comfort is excellent !!!!!

Write a review about this product

Answer the question

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The question has already been answered, thank you very much for trying to help another customer. We will count on you for future questions.

Include AI Generated questions and answers

2020-03-21

Nejc

C4 300 Footpocket

Hello, these is price for pair, or one pice? Thanks

Answer of TradeInn Expert

Hello! they are sold by unit. Thanks for your question!

* Generated by AI based on customer and product data

2023-12-17

Windaselena

C4 300 Footpocket

Hello, i want to ask the material of this product. What is c4 300 foot pocket made from? Plastic or rubber?

Answer of Rafal

I am not an expert, but it seems to be non-elastic rubber. Hard to put on but then lies well. I use 300 in summer and 400 for my winter fins.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

What are the main benefits of the C4 300 footpockets?

Answer of Generated by AI and verified

The C4 300 footpockets are engineered for ultimate efficiency and performance. Key benefits include their extremely lightweight design at just 316g to reduce fatigue, an anatomical shape for a responsive fit, and a hydrodynamic profile that minimizes drag in the water. This ensures your kicking effort is effectively transferred into powerful propulsion.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

What material are the C4 300 footpockets made from?

Answer of Generated by AI and verified

These footpockets are constructed from a high-quality, soft polyurethane material, which contributes to their comfortable feel and flexibility.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

Are these footpockets difficult to put on?

Answer of Generated by AI and verified

Some users find that the C4 300 footpockets have a very tight fit, which can make them difficult to put on. Using a shoe horn may help.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

Is the C4 300 footpocket worth the investment for freedivers?

Answer of Generated by AI and verified

The C4 300 footpocket is designed for efficiency and comfort, making it a valuable choice for freedivers seeking lightweight performance. Its ergonomic design and minimal drag enhance propulsion, which can be crucial for extended dives.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

What is the weight of the C4 300 footpocket?

Answer of Generated by AI and verified

The C4 300 footpocket has a weight of 316 grams, making it one of the lighter options available, designed to minimize diver fatigue.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

What type of foot pocket does the C4 300 have?

Answer of Generated by AI and verified

This product features a full foot pocket design, which encloses the entire foot for a secure and direct connection to the fin blade.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

Does the C4 300 have a hydrodynamic design?

Answer of Generated by AI and verified

Yes, the C4 300 footpocket features a minimalist, hydrodynamic design. This helps to reduce drag, allowing for faster and more fluid movements through the water.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

What is the buoyancy of these footpockets?

Answer of Generated by AI and verified

The C4 300 footpockets have a neutral buoyancy characteristic.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

What is the primary material used in the C4 300 footpocket?

Answer of Generated by AI and verified

The C4 300 footpocket is made from high-quality, soft polyurethane, which provides comfort and durability.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

Who are the C4 300 footpockets designed for?

Answer of Generated by AI and verified

These footpockets are specifically engineered for freedivers and spearfishers who prioritize efficiency, lightweight performance, and comfort during their dives.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

What type of fin blade is the C4 300 footpocket compatible with?

Answer of Generated by AI and verified

The C4 300 is a footpocket designed to be paired with a separate fin blade. It is suitable for paddle-style blades. Some sets may include screws for attaching the blades.

* Generated by AI based on customer and product data

2026-09-13

Generated by AI and verified

C4 300 Footpocket

How does the C4 300 footpocket compare to the Cressi Clio Diving Fins?

Answer of Generated by AI and verified

The C4 300 footpocket is notably lightweight at 316g, offering reduced fatigue during dives. While specific specs for the Cressi Clio Diving Fins are not available, the C4 300's focus on efficiency and comfort makes it a strong contender for serious divers.

* Generated by AI based on customer and product data

2020-05-28

Raul

C4 300 Footpocket

Hello, the price is for a pair of footwear? What does it include in addition to footwear? Thank you

Answer of TradeInn Expert

Hello! It´s just a unit without a mounting kit. Thanks for your question!

* Generated by AI based on customer and product data

Ask a technical question about this product

Frequently bought together
Best sellers

Use cases

Freediving 90% Fit

The C4 300 footpocket is designed for freediving, featuring a lightweight and hydrodynamic profile that minimizes drag. Its anatomical shape and pre-formed 3° angle are engineered to maximize energy transfer for efficient propulsion during deep dives.

Lightweight construction (316g),Hydrodynamic design,Full foot pocket type

Spearfishing 85% Fit

Ideal for spearfishers who need powerful and controlled movements. The full foot design provides a secure connection to the fin blade, while the hydrodynamic shape allows for quiet, fluid motion through the water.

Hydrodynamic design,Full foot pocket type,Polyurethane material

Recreational Snorkeling 70% Fit

For snorkelers looking to upgrade their fins, this footpocket offers a comfortable and efficient option. The lightweight polyurethane material and full-foot design provide a secure fit for extended time on the water's surface.

Full foot pocket type,Lightweight construction (316g),Polyurethane material

Custom Fin Assembly 95% Fit

This product is a footpocket, designed to be paired with a separate fin blade. It's an excellent choice for divers who want to build a custom fin setup tailored to their specific performance needs and preferences.

Full foot pocket type,Polyurethane material,Lightweight construction (316g)

Best for

Best for Efficient Freediving

The anatomical, full-foot design and hydrodynamic profile are engineered to minimize energy loss, translating every kick into powerful and efficient propulsion.

Foot pocket type: full foot; Hydrodynamic design: yes

Ideal for Spearfishing Agility

This footpocket provides excellent control and stability, allowing for the responsive movements and speed necessary for successful spearfishing.

Foot pocket type: full foot

Great for Casual Snorkeling

The lightweight polyurethane material and full-foot design offer a comfortable experience for casual snorkeling without requiring intense effort.

Material: polyurethane; Fin weight: 316g; Foot pocket type: full foot

Perfect for Occasional Divers

With a design that boosts diving confidence through efficient energy transfer, this footpocket is a dependable choice for occasional diving.

Material: polyurethane; Hydrodynamic design: yes

Benefits

Ideal buyer profiles

The Spearfishing Adventurer

This diver is focused on performance and efficiency during underwater hunts. They require gear that feels like a natural extension of their body, allowing for quiet, powerful movements and precise control to approach marine life without startling it.

The C4 300 footpocket is designed for maximum energy transfer, turning every kick into efficient propulsion. Its hydrodynamic profile reduces drag for stealthy approaches, while the anatomical shape provides the responsive control and stability needed for successful spearfishing.

The Dedicated Freediver

This individual practices freediving regularly, pushing their limits in depth and duration. They prioritize equipment that minimizes energy expenditure, offers a comfortable and secure fit for long sessions, and provides reliable performance with every kick.

With its lightweight 316g construction and design focused on efficient propulsion, this footpocket helps conserve precious oxygen. The soft polyurethane material and anatomical full-foot design ensure a comfortable, secure fit that reduces fatigue during extended freediving sessions.

The Performance-Oriented Hobbyist

This person may be an occasional diver, but they invest in high-quality gear to maximize their enjoyment and performance in the water. They seek equipment that offers tangible benefits in speed, control, and comfort over entry-level options.

This footpocket offers a significant upgrade in performance. The hydrodynamic design boosts speed and reduces effort, while the ergonomic shape enhances control, leading to increased diving confidence. Its durable polyurethane construction ensures reliable performance for many dives to come.

Competitive features

The C4 300 is a specialized, high-performance footpocket engineered specifically for freediving and spearfishing, where minimal weight and maximum energy transfer are critical. In contrast, the competing products are complete fin sets geared more towards general diving and snorkeling. The C4 300 focuses on providing an ultralight, anatomical base for custom fin setups, prioritizing efficiency for advanced users.

Where it excels

The C4 300 excels in lightweight performance, designed to minimize user fatigue and conserve energy during demanding activities like freediving and spearfishing. Its ergonomic, pre-formed 3° angle and anatomical shape provide a highly responsive fit, ensuring efficient power transfer from every kick. The minimalist, hydrodynamic profile is engineered to reduce drag, allowing for more fluid and faster movement through the water.

Consider alternatives if...

For casual snorkelers or divers seeking a simple, all-in-one solution, a complete fin set like the Aqualung or Scubapro models would be more convenient than this specialized footpocket. Users who prioritize ease of use may find the C4 300's very tight fit challenging, as it can be difficult to put on without assistance or a shoe horn.

Verdict

The C4 300 Footpocket is a definitive choice for serious freedivers and spearfishers seeking to optimize their equipment for lightweight efficiency and power. Its design is focused on performance, offering a responsive and hydrodynamic fit. However, it is not an all-in-one solution and its tight fit may not be suitable for recreational users or those who value convenience over peak performance. For general snorkeling or diving, integrated fin systems from brands like Aqualung or Scubapro offer a more straightforward and accessible option.

Specs comparison

Favorite On Favorite Off
Materialpolyurethanetechnopolymer
Buoyancyneutralneutral
Blade Typepaddlepaddle
Foot Pocket Typefull footclosed foot
Fin Weight316 g250 grams

Specs vs competitors

Favorite On Favorite Off
Favorite On Favorite Off
Materialpolyurethaneplasticplastic
Color OptionsBluecolorful-
Buoyancyneutralneutral-
Blade Typepaddlepaddlepaddle
Foot Pocket Typefull footclosed foot pocketfull foot
Hydrodynamic DesignYesYesYes
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