Mechanism, Mechanism Pro or Essential?

Mechanism is PNS’s race-fit collection: a tight, aerodynamic cut for fast-paced training, intervals and racing. The Mechanism Pro goes further: PNS describes a radical second-skin feel and 4D body wrap, with 4D stretch-woven fabric developed for PNS, laser-cut edges and a mix of stitched and bonded seams. The Essential is made with comfort in mind: PNS suits it to low-intensity rides where comfort is paramount, with a shorter collar and slightly longer sleeves.

How does the Mechanism Jersey fit, and which size should I pick?

PNS sizes by body measurements: measure your chest around the fullest part and your waist around the slimmest, then check the chart in the size guide (for example, M is 96–101 cm chest). It is a tight, aerodynamic race fit, with a shortened front and a longer back for the riding position; PNS’s size guide shows a 188 cm model in M. Reviewers describe a short, aggressive cut with rear pockets that sit high by design (road.cc, Cyclingnews); Cycling Weekly found the 2025 version true to size.

What changed in the 2025 Mechanism Jersey?

For 2025 PNS revised the low-cut collar and made the side pocket a more durable single-layer patch with an in-seam zip and a stay-down puller; the back pockets are unchanged. Cyclingnews’ 2025 review confirms the changes.

Which temperatures is the Mechanism Jersey for?

PNS rates it 4–6 on its 6-point temperature scale, for mild to high temperatures, and suggests adding a stow-away jacket or gilet or arm warmers on colder rides. It is a summer jersey rated 1/6 for wind and water protection.

How should I wash a PNS jersey?

PNS recommends a pre-wash before first use, then washing inside out with the zip closed, on a gentle 30 °C cycle with low spin and a non-bio detergent. No bleach, fabric softener, tumble dryer or hot iron: let it air dry, and don’t mix light and dark colours. The garment label is the final reference.

New

PAS NORMAL STUDIOS Mechanism Logo Jersey

AOP RTN Classic Red

€190,00

~~€190,00~~ €190,00

Tax Included
EU Destination Selected (Spain)

+3 units in stock

New

The essentials

Best for

Racing
Fast training
Summer rides

PAS NORMAL STUDIOS Mechanism Logo Jersey - AOP RTN Classic Red

Technologies

Rated by PAS NORMAL STUDIOS

Temperature

-10 °C0 °C15 °C+30 °C

The jersey is suited for rides in mild to high temperatures. Combine with a stow away jacket/gilet or arm warmers on colder rides.

Intensity

LowHigh

The jersey is optimised for high-intensity training rides and races.

Fit

LooseTight

The jersey has a tight, aerodynamic fit, ideal for high-intensity road riding and racing.

Breathability

5/6

Breathability is the ability of a fabric to let perspiration out. This jersey works with you as you ride thanks to its micro-perforated fabrics on the collar, sleeves, back and side panels; it dries quickly, so moisture is absorbed and dissipated to reduce windchill after the hardest efforts.

Insulation

1/6

Insulation is the ability of a fabric to keep you warm and protect you from the cold. This jersey is made for high-intensity riding in mild to warm temperatures.

Wind protection

1/6

Wind protection is the ability of a product to stop wind getting through the fabric. This jersey is made from lightweight fabrics that offer limited wind protection.

Water protection

1/6

Water protection is a product’s ability to keep you dry. This jersey is made from lightweight fabrics that offer limited water protection.

Specifications

Fit	Race fit (tight, aerodynamic — PNS)
Fabric	86% polyester, 14% elastane (M.I.T.I., Italy)
Weight (size M, PNS)	102 g
Season	Summer
Sizes	XXS–XXL

Race fit

Pas Normal Studios’ Mechanism race fit: in PNS’s words a “tight, aerodynamic fit”, with a signature silhouette for an aggressive position on the bike. Like all PNS jerseys, the front panel is shortened and the back extended for the riding position.

Micro-perforated fabric

A lightweight, highly breathable fabric from Italian maker M.I.T.I., micro-perforated on the collar, sleeves, back and side panels, and quick-drying: 86% polyester, 14% elastane (PNS).

Low-cut collar

A modern low-cut collar, revised for 2025, to reduce chafing and improve comfort (PNS).

Pockets

Elastic rear pockets that won’t overstretch when full, with an elastic hem to keep things secure; plus a concealed single-layer side pocket with a stay-down in-seam zip, which PNS made more durable for 2025, and a patch pocket inside.

Elastic grippers

Soft, fully dyed elastic at the waist and sleeves, with PNS’s signature silicone gripping pattern.

YKK zip

A full-length Japanese YKK zip with a semi auto-lock puller, and guarded zip ends that PNS says prevent skin irritation and protect your bib shorts.

PAS NORMAL STUDIOS Mechanism Logo Jersey - AOP RTN Classic Red

Compare with

	PAS NORMAL STUDIOS Mechanism Logo Jersey - AOP RTN Classic RedPas Normal Studios’ race-fit summer jersey, the core of its Mechanism collection: a tight, aerodynamic cut for an aggressive position, light micro-perforated Italian fabric (102 g in M) and a low-cut collar, updated for 2025 with a more durable zipped side pocket.	PAS NORMAL STUDIOS Mechanism Pro Jersey - Black Choose it for PNS’s top race jersey: second-skin feel, 4D stretch-woven fabric, laser-cut edges and bonded seams.	PAS NORMAL STUDIOS Essential Jersey - Black Choose it for comfort over speed: PNS’s Essential Jersey for low-intensity rides, with a shorter collar and slightly longer sleeves.
Regular price	€190,00	€220,00	€160,00
Safety rating	—	—	—
Fit	Race fit (tight, aerodynamic — PNS)	—	—
Fabric	86% polyester, 14% elastane (M.I.T.I., Italy)	—	—
Weight (size M, PNS)	102 g	64 g	158 g
Season	Summer	Summer	Summer
Intensity (low → high)	5-6/6	6/6	2-4/6
Fit (loose → tight)	5-6/6	5-6/6	3-5/6
Temperature (cool → hot)	4-6/6	4-6/6	4-6/6
Breathability	5/6	5/6	4/6
Insulation	1/6	1/6	2/6
Wind protection	1/6	1/6	1/6
Water protection	1/6	1/6	1/6
Sizes	XXS–XXL	XXS–XXL	XXS–XXL

PAS NORMAL STUDIOS Mechanism Logo Jersey - AOP RTN Classic Red

Size guide

Size	Chest (cm)	Chest (in)	Waist (cm)	Waist (in)	Hip (cm)	Hip (in)	Thigh (cm)	Thigh (in)
XXS	80–86	31–34	67–72	26–28	80–85	31–33	48–51	19–20
XS	86–91	34–36	72–77	28–30	85–90	33–35	51–53	20–21
S	91–96	36–38	77–82	30–32	90–95	35–37	53–56	21–22
M	96–101	38–40	82–87	32–34	95–100	37–39	56–59	22–23
L	101–106	40–42	87–93	34–37	100–105	39–41	59–61	23–24
XL	106–111	42–44	93–99	37–39	105–109	41–43	61–63	24–25
XXL	111–118	44–46	99–104	39–41	109–114	43–45	63–66	25–26

Pas Normal Studios sizes by body measurements: chest around the fullest part, waist around the slimmest. PNS jerseys have a shortened front and an extended back for the riding position; PNS’s size guide shows a 188 cm model in M.

How to measure

Chest: around the fullest part, under the arms. Waist: around your natural waistline. Hips: around the fullest part. Keep the tape snug but not tight.

SizeSelect your size XX-SMALL X-SMALL SMALL MEDIUM LARGE X-LARGE XX-LARGE

Description

Pas Normal Studios’ race-fit summer jersey, the core of its Mechanism collection: a tight, aerodynamic cut for an aggressive position, light micro-perforated Italian fabric (102 g in M) and a low-cut collar, updated for 2025 with a more durable zipped side pocket. PNS suits it to fast-paced training, intervals and racing. For a looser, comfort-first jersey, the Essential; for a second-skin race jersey, the Mechanism Pro.