Pas Normal Studios Mechanism Long Sleeve Jersey Review: Stylish and comfortable, a great jersey across a range of temperatures.
A designer jersey that balances form with function
For a jersey that doesn’t feature a heap of clever tech, it works impressively well across a broad range of temperatures. It’s comfortable and stylish too, but lacks some refinement and is expensive for what it is.
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Comfortable fit
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Broad operating range
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Fit has been greatly improved
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Broad colour/style choice
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Expensive for a long sleeve jersey
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Valuables pocket sits internally
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Pas Normal Studios (PNS) is a brand synonymous with premium style in cycling. But more recently it has upped the functionality to match the style. The Mechanism Long Sleeve Jersey may appear unassuming, using single fabric types rather than mixed panels of different materials, but it is an impressive performer across a range of conditions, with high levels of comfort for long days in the saddle.
This T.K.O design is rather distinctive but I'm a big fan
Construction
PNS gives this jersey a useable temperature range of 0-20˚C, impressively broad. Breathability is rated a 4/6, while insulation a 3/6. Wind and water protection both get a 2/6.
The majority of the jersey makes use of a light fleece lining. It’s incredibly soft, and due to the thinness, incredibly breathable. This is intentional to improve moisture dissipation, something that brands like Castelli have put a great focus on with the AirCore technology implemented into its AW25 range and beyond. The only change of material is at the base of the pockets, where a mesh-like material is used so as to avoid excessive heat buildup of two layers of fabric and pocket contents.
PNS refers to it as a ‘Bacteriostatic and hydrophilic garment’, essentially meaning it is better at moisture transfer, at the expense of weather proofing, and should avoid build-up of sweat smells over time. Internally it’s a shame that flat-lock seams have not been used, but in reality this will often be worn with a base layer so this hasn't had a noticeable effect. The collar and cuffs use a folded over layer of fabric for a soft and rugged construction that shouldn't fray over time.
For added longevity, a zip guard is present at the top and the bottom of the zip. This should stop the materials from rubbing and pilling any shorts or tights that you wear. At the rear, the standard three cargo pockets are present, with a zip-up valuables pocket as well. This is situated internally to the cargo pocket, rather than the usual external placement.
The jersey has a race fit, but the pockets are not so high as the old Mechanism fit, or the Mechanism Pro fits. Colour wise, as standard there are ten options, as well as this TKO special edition and several other ‘Series’ specials.
It is somewhat limited on reflective detailing, but it is not a deep winter jersey
Performance
Over the course of what has been a rather poor UK winter with regards to the weather, and a brief flourish of warm spring temperatures in March, the PNS Mechanism LS jersey has had to deal with a wide range of conditions; I've worn it on 6-8˚C winter rides as well as uncharacteristically sunny days where it got up to 18˚C . Layering beneath has varied, but the PNS Mech jersey has remained the consistent first defense against the elements.
The fit on the body when riding is on the shorter, Pro fit, side, but pockets are still accessible and the front hem does not ride up
The jersey manages an impressive balance of insulation with the lightly brushed fleece interior, combined with a very high level of moisture wicking for temperature regulation. The only area that this moisture wicking becomes an issue is in wet weather, but it has not been designed for that. This is a jersey made to keep you warm in cool conditions without a buildup of sweat when putting the watts down.
Most impressively it was rather comfortable up to 18˚C. I generate a lot of heat, so generally I would find that weather too warm for long sleeves. However, even with the majority of the jersey featuring the lightweight brushed fleece interior, it did not get too warm. The mesh used at the base of the rear does help dissipate heat surprisingly well, especially being around the pockets. But the main material is great at wicking away sweat.
The rear valuables pocket still sits internally, something that has been addressed on the latest PNS Long Sleeve jerseys in the Essential range
The zip guards top and bottom are useful for reducing irritation around the neck and from rubbing the tights, but they can make zipping up or down awkward as they catch. The pockets meanwhile are situated lower than the previous Mechanism fit, which is a godsend for me with a long torso that certainly didn’t suit that prior fit. The pockets are more race sized, but can still accommodate plenty of food, spares, and tools. My only gripe with them is that the valuables pocket sits internally, so things like keys will get pressed into your back if the main pocket is full.
Some areas are not quite as refined. For example, the sleeves are folded over in design rather than raw cut, and the seams internally are not flat-lock. However, the seams don’t leave skin impressions, even with the race fit, and the sleeves are comfortable and not subject to fraying. I also really like the design of this jersey, as along with the standard colours there are plenty of special edition offerings like this. It does however lack reflective detailing given that it is appropriate for more winter use.
A lower zip guard helps protect premium bib tights from abrasive damage
Value
£190 / $250 for a long-sleeve jersey is not great value. The TKO and PAS specials also hold a premium over the standard price so this is £205 for a long sleeve jersey. Given the lack of specific weather proofing this is a rather steep price. It certainly works well and had a broad operating temperature, but that is still expensive for what it is. It’s not far off the Maap LS Thermal jersey at £180 / $210, but several offerings undercut it substantially.
The Assos Equipe R Spring/Fall S11 jersey for example is £175 / $235 but features a host of different panels and technical features, while the Rapha Pro Team Midweight jersey is £165 / $260 for something that is functionally very similar.
I can’t lie though, there is a part of me that just likes the jersey for the way it looks and the brand. That doesn’t make it good value, in the same way a Gucci bag isn’t good value. But for some people, the price is justified by the brand and style. It does perform very well at what it sets out to do though, so it is not a case of style over substance.
Perhaps not as sleek as a raw cut cuff, but effective and with good longevity potential
Conclusion
The Pas Normal Studios Mechanism LS Jersey is a great balance of both style and substance. It’s impressively breathable in high teen Celsius temperature figures, but adept in the colder weather conditions as long as it stays dry. The lightweight brushed fleece helps here with great moisture wicking, while a breathable rear strip helps excess heat escape.
It’s not quite as refined in some elements, but the functionality is not impacted in the slightest. It certainly holds a premium price and isn’t the best value, but I like the style personally and people won’t be disappointed with the performance.
