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Essax Shark saddle uses shark fin shape to promote improved pedalling efficiency

Saddles, you think you’ve seen them all and then along comes the unique Essax Shark. Now, there are plenty of theories about saddle design, shape and width, but according to Jon Iriberri, a Spanish bike fitter, the unique shark fin design is said to evenly spread a cyclists weight onto the sit bones and reduce hip rotations, limb differences and inefficient pedalling techniques.

Some claims. This novel saddle design apparently eliminates such issues with the unique shark fin located at the rear of the saddle. The fin, the company claims,  helps to correctly locate the sit bones onto the right part of the saddle. Along with aligning the sit bones, it's said to prevent side-to-side rocking when pedalling and better align the knees to help distribute pressure evenly, and comfortably, through to the sit bones.

The company says its testing, hundreds of real biomechanical studies during the development, found the fin isn’t perceptible to the cyclists when pedalling. It seems to be the case that if you can you feel the fin, you’re not sitting correctly on the saddle. Think of it as a guide then, as seems to be the case, to ensure you're sat properly on the saddle. Doesn’t seem so bonkers now does it?

Essax are based in Alicante, Spain and is a company with 25-years experience in the manufacturing of polyurethane foam. They’ve applied this know how to making saddles, and produce the saddles in their own factory. They produce a range of saddles of the more conventional type too, including the Adrenaline Tech, Tudons and Eon, but they're pushing the boundaries with this new design.

The saddle is currently with the UCI technical committee who will judge if it can be allowed in UCI races and events. It's also being race by UCI Professional Continental Team Pro, Caja Rural Seguros RGA.

The saddle weighs a claimed 210g and is constructed with 3mm deep foam. The fin is 40mm wide and high, and 100mm long, the saddle itself is 140mm wide at its widest points. We’ve no word on availability or pricing yet.

We’re an open-minded bunch here at road.cc, we prefer to hold judgment on new products until we’ve actually had the chance to try them out, but we do have to admit this does challenge everything we know about how a comfortable saddle should look. But there does appear to be valid science behind the design. We'll try and get one in for test.

More at www.essax.eu

David has worked on the road.cc tech team since July 2012. Previously he was editor of Bikemagic.com and before that staff writer at RCUK. He's a seasoned cyclist of all disciplines, from road to mountain biking, touring to cyclo-cross, he only wishes he had time to ride them all. He's mildly competitive, though he'll never admit it, and is a frequent road racer but is too lazy to do really well. He currently resides in the Cotswolds.

28 comments

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Nick T [913 posts] 1 year ago
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Nothing new here - I've long held the opinion that if you can feel your saddle working it's way inside you, you're probably doing something very wrong.

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deblemund [262 posts] 1 year ago
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Kinky.

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sanderville [314 posts] 1 year ago
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So do you use chamois cream with it or Preparation H?

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Nick T [913 posts] 1 year ago
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That old Yellow Pages advert came true after all.

Like sitting on a razor blade, indeed.

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allez neg [497 posts] 1 year ago
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I paid fifty quid for these shorts, and twenty quids worth is up me arse!

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sunDOG [23 posts] 1 year ago
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 39

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s_lim [166 posts] 1 year ago
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Jeepers. If you're like me, you're none too elegant when hill-climbing. I can just imagine a hard out-of-the-saddle effort coming to a harsh end as you slam your arse down on the saddle.

Anyway, white - no thanks

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Simmo72 [583 posts] 1 year ago
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popular as a warm up for those riding out to the heath for a meet up

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Al__S [957 posts] 1 year ago
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check's date um, nope, not April 1st?  7

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Gizmo_ [1333 posts] 1 year ago
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Well, it's... innovative...

If you're the sort of cyclist who's honking from side to side while sat in the saddle however, you're probably the sort of cyclist who's still using the OEM one and wouldn't think to change.

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del_boy13 [10 posts] 1 year ago
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 24

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MKultra [394 posts] 1 year ago
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Hmmm...a saddle that lifts and separates.

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sfichele [140 posts] 1 year ago
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A saddle that is described to
"evenly spread a cyclist"
 24

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Karbon Kev [688 posts] 1 year ago
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i'd only buy it if it said Essex ...

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jayonabike [10 posts] 1 year ago
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Handy if you have an itch.

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GerardR [117 posts] 1 year ago
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How I love the smart cracks. regards from a wet Auckland morning (still about 21C, mind).

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ridein [110 posts] 1 year ago
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They should market this with their own bib short.  13
I can't see how the average chamois pad would work well with that fin. Cue the "Jaws" shark music.

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zagatosam [53 posts] 1 year ago
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"So do you use chamois cream with it or Preparation H?" KY jelly I think  20

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philtregear [100 posts] 1 year ago
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looking forward to the review. i have tried a variety of saddles and settled on charge spoon as being ( relatively) comfortable and easily affordable. i tried RIDO as i was getting back pain, but this " innovation" was not helpful.

if this works i will consider it, but i am sceptical.

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allez neg [497 posts] 1 year ago
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Surely with the typical British arse bearing down on it the erm, technical feature will get squashed after a while.

At least you can take it back and say fins ain't what they used to be.

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racingcondor [153 posts] 1 year ago
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Reduces hip rotation by being spectacularly uncomfortable if you move around on it? Yikes.

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Notsofast [95 posts] 1 year ago
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Now I knoiw why they refer to the chamois as an insert!

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Gizmo_ [1333 posts] 1 year ago
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"Hello girls."

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sodit [89 posts] 1 year ago
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Not April the first yet is it?  21

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mikroos [257 posts] 1 year ago
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There must be a typo in the name of this product. It should read A$$ Axe.

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JackBuxton [34 posts] 1 year ago
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This saddle should be sponsored by Mastercard  3 3 3 3

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JackBuxton [34 posts] 1 year ago
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This saddle should be sponsored by Mastercard  3 3 3 3

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JackBuxton [34 posts] 1 year ago
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This saddle should be sponsored by Mastercard  3 3 3 3