C4 - Umberto Pelizzari Fins
SKU: 57759651607

C4 - Umberto Pelizzari Fins

Sale price$103.50 Regular price$115.00
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Description

C4 - Umberto Pelizzari FinsUmberto Pelizzari. This mythical name and not much more would be enough to describe these fins. Tens of thousands of hours spent training, an impressive series of World Records in Constant Weight make Umberto an absolute reference when it comes to knowledge and experience in the use of freediving equipment. The new UP fins featuring technopolymer blades and 250 foot pockets are the result of the close collaboration between Umberto and C4. The

Umberto Pelizzari. This mythical name and not much more would be enough to describe these fins. Tens of thousands of hours spent training, an impressive series of World Records in Constant Weight make Umberto an absolute reference when it comes to knowledge and experience in the use of freediving equipment.

The new UP fins featuring technopolymer blades and 250 foot pockets are the result of the close collaboration between Umberto and C4.

The Technopolymer Blade Fin has been created by using the most recent plastic moulding technologies. Performance, which has always been a real obsession for Umberto, is at the basis of this project

A key element feature by the C4 Umberto Pelizzari fins is the fact that the water rails are over-moulded on the blades. The length (30.2* cm), the variable height (max 17.8* mm), the thickness (3.3* mm) and the material (thermo rubber) are another important feature of these blades. The result is a blade that works perfectly with no interference from the water rails and minimal lateral sliding of the fin.

The blade features a central smooth and glossy band which widens from the foot-pocket to the tip of the blade. On the sides, the surface feature a carbon fiber finish look. On the back side of the blade, the finish of the surface is exactly the opposite.

The tip of the blade is shaped as whale’s tail. The blade is 59 cm long at the center and 62.5 cm laterally. The measure takes into consideration the length from the tip of the foot-pocket to the end of the blade. The total maximum length of the blade is 79.5 cm, while the total maximum length of the fin, so including the foot-pocket, it is 91 cm.

Two long ribs are featured laterally on both surfaces of the blade, but they are 5 cm longer on the top side. On the back side of the blade there is an additional central nerve which runs almost all along the length of the blade. On the back surface, just before and after the tip of the foot-pocket, there are two 16 cm long ribs, 15 mm wide and 9 mm long, with an almost triangular section. The thickness in front of the foot-pocket is 3.4 mm, and goes down to 1.6 mm at the tip of the blade.

The angle of the blade is 29°, which added to the 3° angle of the C4 250 foot-pocket, brings the total angle to 32°.

Today the C4 Umberto Pelizzari fins are by far the lightest on the market of long polymer blade fins. They weigh less than 1200 grams a pair.

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SKU: 57759651607

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Kate Kelley
New York, US
★★★★★ 5
ASICS shoes never disappoint
Size: 10.5, Color: Cool Grey/White
My husband has run in Asics for years. He usually gets another style but decided to try the Excite because they were on sale. The material in the uppers is very breathable which is nice on hot days. They also have a very stable, thick sole which is perfect for running on asphalt. Generally we don’t walk in our running shoes but on a recent vacation he only had these sneakers so spent a lot of time walking around and they remained incredibly comfy! The Excite seem a bit more narrow in the toe box but otherwise run true to size. We would order them again!
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Reviewed in the United States on May 23, 2026
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Alex V.
Grantham, US
★★★★★ 5
Take my advice, upsize half size bigger
Size: 11.5, Color: Winter Sea/Black
I need to start suggesting everyone that owns Gel-Kayano, Gel-Cumulus and/or GT-1000 14, that if for example you wear US men's size 11 with these, order 11.5 in Gel-Excite 11. When I did a search using AI for getting suggestions on the fitment and sizing of the Gel-Excite's 11, I got 'order half size up' in all results, I was a little skeptical but I follow the suggestions and I'm glad I did because no way that size 11 would've fit me, 11.5 fit me perfectly as the Gel-Kayano 32 in size 11. I've just tried these one, so far I feel them comfortable, I walked for 5K steps and haven't had any discomfort with my flat feet and the issue I have with my left knee patellar tendon. I stood up for 30 minutes while I waited for my car at the carwash, no issues. Time will tell about durability, but I can say the looks and comfort are pretty good for such a budget shoe.
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Reviewed in the United States on April 23, 2026
S
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stacer hartshorn
Lowell, US
★★★★★ 5
Perfect boots great fit
Size: 9.5, Color: Black
Awesome timeframe perfect fit and awesome boots
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Reviewed in the United States on November 6, 2019
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forrest
Whiting, US
★★★★★ 4
Longevity
Size: 10.5, Color: Black
Boots are light and broke in quick. No nfpa tag. I blew the heels out after 1 season.
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Reviewed in the United States on May 2, 2025
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Robert Heusser
Louisville, US
★★★★★ 5
It's not cloth but Nomex.
Size: 8.5, Color: Black
It's not cloth but Nomex.
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Reviewed in the United States on September 17, 2020

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