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C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

109 €

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Features of C4 freediving Umberto Pelizzari Sideral Soft

Trusted by over 25 million satisfied customers worldwide

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Specifications C4 freediving Umberto Pelizzari Sideral Soft

Features of C4 freediving Umberto Pelizzari Sideral Soft

Strap Closed foot pocket

Strap

Closed foot pocket

Color Black

Color

Black

Age Adult

Age

Adult

Recommended Use Freediving

Recommended Use

Freediving

Materials Plastic

Materials

Plastic

Product description of C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Description summary

Dive deeper with the C4 Sideral Soft fins, designed in collaboration with freediving legend Umberto Pelizzari. Engineered for exceptional power and efficiency, their soft blade composition requires less effort, making them ideal for long dives and all skill levels. The anatomical foot pocket provides a secure, comfortable fit, minimizing energy loss and maximizing power transfer. Innovative water channels optimize flow to reduce drag, ensuring every kick delivers effortless propulsion. Unleash your potential and experience unparalleled performance on every dive

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Dive Deeper with the C4 Freediving Umberto Pelizzari Sideral Soft Freediving Fins

Experience unparalleled performance and comfort on your next freediving adventure with the C4 Freediving Umberto Pelizzari Sideral Soft Freediving Fins. These fins, designed in collaboration with freediving legend Umberto Pelizzari, are meticulously crafted to deliver exceptional power and efficiency with every kick.

Unleash Your Potential:

The Sideral Soft fins are engineered for freedivers of all levels, from beginners seeking effortless propulsion to experienced athletes pushing their limits. The softer blade composition requires less effort to accelerate, making them ideal for long dives and demanding training sessions.

Experience Superior Comfort and Fit:

Enjoy a secure and comfortable fit thanks to the anatomical foot pocket designed to minimize energy loss and maximize power transfer. The closed foot pocket design ensures a snug fit and prevents water ingress, allowing you to focus on your dive without distractions.

Built for Performance:

Crafted from high-quality, durable plastic, the Sideral Soft fins are built to withstand the rigors of freediving. The blade´s innovative design features a special water channel system that optimizes water flow, reducing drag and enhancing propulsion.

Key Features:

* Adult Size: Designed for adult freedivers.
* Closed Foot Pocket: Ensures a secure and comfortable fit while preventing water ingress.
* Freediving Specific: Optimized blade design for efficient and powerful freediving performance.
* Durable Plastic Construction: Built to withstand the demands of freediving.

Technical Specifications:

* Blade Material: High-performance plastic
* Foot Pocket Type: Closed, anatomical
* Blade Stiffness: Soft

Take your freediving to new depths with the C4 Freediving Umberto Pelizzari Sideral Soft Freediving Fins. Order yours today and experience the difference!

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8 Reviews

What our customers are saying about C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Experience improved dynamic apnea and better glide with these high-performance C4 fins. They are impressively effective for deep diving, though some find them a bit stiff for pool use. Praised for their excellent quality, beautiful design, and ergonomic footpocket. Sizing can be inconsistent; while some find them true to size, others with thin feet recommend sizing down for a perfect fit

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Great product, super fast delivery

2025/12/17

Tomas

Great fins. Be cautious that foot pocket is made of hard plastic/rubber and not stretchy at all,

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Reviews

2025/01/31

Evgeniy

Качественные ласты на 41 размер подходят. Упаковано в картон и пупырку. Спасибо продавцу за хороший товар

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Excellent c4 bi-fins

2024/12/16

Harvy

Since I started using C4 fins I have improved my dynamic apnea as I now have to make less effort and glide better.

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Amazing fins

2024/09/27

Mauricio

The footpocket it’s true to its size, I would recommend to use the oficial C4 size chart. Beautiful fins.

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

C4 fins

2024/01/24

Pit

Very convincing quality. Good ergonomic fit, material feels nice. Delivery and parcel was perfect as usual.

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

C4

2023/12/29

Konstantin

good product. but for a leg of 28.5 cm, size 42-43 turned out to be too big.

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Excellent product, but watch the size.

2023/12/10

Alberto Cavasin

The product is excellent and the price also considering that I took advantage of the Black Friday discount. A little attention to the size as I use Cressi fins size 42/43 and the C4 size table would give me the same size, in practice however, even with a 3mm fit, they are large for me; I therefore purchased a C4 insole which "eats" one size. I recommend a size smaller than the table if you have thin feet.

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Impressive for the depth! (soft model)

2023/08/10

Felice

They are impressively effective at depth (tested up to -30m to date). For the swimming pool, they are quite correct but remain a little stiff. In short, unbeatable value for money. I always recommend them to my students now!

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C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Size, length and functionality

2024/09/13

SARA

Hello: I need to know the length of the fin, what size I would have to use for a foot that measures 25.5 cm and if it is suitable for swimming with currents (if it is light and very flexible). Thank you.

Answer of Diana Lucia

According to the reported sizes, they would be 38-39, but the size does not really correspond since the ones I ordered were extremely small.

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Hangi no

2024/08/08

Tülün

Ayak numaram 38 3mm çorap ile giyeceğim kaç numara almalıyım?

Answer of Ralph

Hello, my girlfriends feet are 255mm in length and 90mm width, at a regular shoe size EU 40. We ordered the C4 fins in size 40-41 and with 3mm neopren socks the foot pocket was too tight at the toe's squeezing them too much. The lenght and fit of the foot pocket was ok, but the toe section not. If you zoom in at an image of the foot pocket you will recognize a difference in the amount of material at the transition to the outer rim. That reduces the foot pockets stretch capacity to a minimum, which is nice if they fit your feet. With the same order we got the Mares Pure Passion Razor in grey in size 39-40. With 3mm socks they had a loose fit and we returned them as well. I do have the C4 Pellizari in soft, in size 42-43 and would say that 3mm socks is nearly the maximum to wear them. With 5mm socks I'm afraid to rip the foot pocket apart. My footsize is 275/280mm length and 100mm width. But with a body weight of 90kg I do have the impression that soft is a little bit to soft. Doing rescue exercises from 15m is not that sufficient than with my SEAC BM30 in size EU43-44. But they require at least a 3mm sock and fit perfect with 5mm sock. Hope that helps.

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Size of the fin

2024/06/19

Patrícia

Good day, I would like to ask about the size of the insole, the inside of the fins, for sizes 38-39 and 40-41. My foot length is 25.5 cm. I would like to know which size I should order to ensure a good fit and avoid returning the product. (product-C4 Umberto Pelizzari Sideral Soft apnea fins) Thank you. Patricia

Answer of Ralph

Hello, I ordered the C4 Sideral in EU 40-41 for my girlfriend with a sole length of 255mm. The length was a great fit, the problem was the width of the forefoot with 2.5mm Cressi socks. The foot pocket is tight in the toe area and has little flexibility due to the design. It didn´t work out and I returned it. The Mares Razor Pro in 38-39 was too wide with socks. Today my girlfriend dives with SEAC BM-30 in size 38-39 and CRESSI Gara Impulse also in 38-39. Both fit with 3mm socks and the SEAC also works with 5mm socks.

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Size of the fin

2024/05/21

Jessica

I would like to know the total size of the fin, I can't find this information anywhere. This is to find out if they can fit in my suitcase. Thanks

Answer of Konstantins

The total length is 95 cm. You can unscrew the galosh and the length will become shorter, and the blade itself is plastic and can be bent

C4 Freediving Umberto Pelizzari Sideral Soft freediving fins

Fins

2023/12/28

Tasneem

Is 109 dollar include a single fin or both of them

Answer of Ivetta

Both fins and shoes are included, but the size is very very small, not as specified! be careful! Ask first to measure the length inside the fins, and then only order.

Answer of Konstantins

There are two included for this price. I have 285mm long legs, I bought sizes 42-43, they turned out to be a little big, I need a sock

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