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BTwin SS Jersey Aerofit 900



Great value for money, solid performing lightweight jersey at a price that's hard to beat

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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The BTwin Aerofit 900 jersey is the companion upper half to B'Twin's excellent value Aerofit 900 bib shorts. I tested the shorts recently, so it was only right that I put the matching jersey through its paces too, and it lives up to the shorts' high standard.

The Aerofit 900 is claimed by Decathlon to be worn by the professional FDJ.FR team, so you're expecting a decent level of performance right off the bat. Decathlon don't go down the fancy acronym/science route and instead just list out performance measures they've focused on. All of these are listed in the tech section below, but there are a couple that I'm a particular fan of.

The pockets are varied and pretty darn good. You get your three standard cargo pockets, then a sealed, waterproof zipped pocket and finally a rubbish pocket for your empty gel wrappers and the like. Big fan of that.

The fit is also pretty impressive, especially when you remember the price. Recently I've been testing a wide range of short sleeve jerseys that cost more than double the B'Twin. The real indicator of how good the fit is, is that I can't pick out any major disadvantages of the B'Twin over the far more expensive jerseys I've been wearing alongside it. The arms extend a good length down my biceps and are tight even on my skinny arms, which is not a particularly common occurrence. The fit around my core and over my shoulders is also plenty tight, so there's minimal-to-zero flapping when out on the bike. Aerofit is certainly no misnomer here.


I was a big fan of how this jersey felt, looked and performed. As with the Aerofit 900 shorts, I found that while I wasn't blown away by any single feature, the whole package being offered by B'Twin is cracking value. It's well worth a look if you are in the market for some performance training/racing gear for a very reasonable price.


Great value for money, solid performing lightweight jersey at a price that's hard to beat test report

Make and model: BTwin SS Jersey Aerofit 900

Size tested: Large

Tell us what the product is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

From Decathlon's site, the jersey is for: "Intensive cycling, 3 hours or more. The jersey worn by the cycling team"

Tell us some more about the technical aspects of the product?

From Decathlon's site, the six aspects of the jersey they've paid special attention to:


Very good perspiration wicking


Low weight / lightweight:

The assembly and components used make this product extremely lightweight


Ergonomic design for a perfect fit + elasticated hem

Anatomic design:

A true second skin, no pleats


Mesh in several places on the jersey

Easy transport:

5 pockets: 3 standard pockets + 1 secure water repellent pocket + 1 for rubbish

Rate the product for quality of construction:

Fit was surprisingly good for the price and the selection of pockets was a plus too.

Rate the product for performance:

No outstanding features but then there were also no major drawbacks either.

Rate the product for durability:

I had no issues with the jersey but the zip was perhaps not as sturdy as some I've used.

Rate the product for weight, if applicable:

Pretty darn light. Very thin fabric used everywhere on this jersey

Rate the product for comfort, if applicable:

I was happy to wear it on any ride.

Rate the product for value:

Probably my favourite thing about the jersey is how much you get for your money.

Tell us what you particularly liked about the product

The price and the fit.

Did you enjoy using the product? Yes.

Would you consider buying the product? Probably.

Would you recommend the product to a friend? Yes.

Overall rating: 7/10

About the tester

Age: 21  Height: 182cm  Weight: 73kg

I usually ride: On-One Carbon Whippet Single Speed MTB/Kinesis Pro6  My best bike is: Scott CR1 Pro

I've been riding for: 10-20 years  I ride: Every day  I would class myself as: Experienced

I regularly do the following types of riding: cyclo cross, commuting, club rides, sportives, general fitness riding, fixed/singlespeed, mtb,


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Beatnik69 | 9 years ago

I bought this jersey yesterday (along with the bib shorts). I'm the same height as the reviewer but 10kg heavier (though most of that is my belly as my arms, legs etc are quite slim) and had to go for the XL. The L was just too tight and the 2XL was far too big.

The _Kaner | 10 years ago

Same 7/10 rating as the £14.99 BTwin ss jersey a few days ago...but less than the 8/10 for the Pactimo...and this jersey looks a better fit (non technical material aspects aside)..

carytb | 10 years ago

7/10 after a review like that! If it was a castelli or a rapha it would probably have got 9.

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