Womens S2 Run Jacket

The Womens S2 Run Jacket is developed for women who want to keep running when the weather turns cold, wet and windy.

The jacket is built with a protective 3-layer fabric on the front and shoulders and a more open technical fabric on the back. This gives more protection where wind and rain hit first, while the back helps your body manage heat and moisture as you run.

The result is a feminine, technical running jacket that feels protective without becoming heavy and bulky.

The front and shoulders are made from a 3-layer laminate with an elastic outer face, a membrane in the middle and a soft, elastic backing.

The fabric weighs approximately 200 g/m². The outer face is 78% polyester and 22% elastane, while the backing is 93% polyester and 7% elastane. Between the layers sits the membrane, which is central to the protection against wind and water.

The back is made from a more open technical fabric focused on moisture transport. In other words, the jacket is deliberately built differently at the front and back, because the body has different needs when you run.

The front and shoulder fabric has been tested to a water column of at least 10,000 mm according to ISO 20811.

A water column test measures how much water pressure the fabric can withstand before water gets through. The higher the number, the greater the fabric's own resistance to water pressure.

A minimum of 10,000 mm therefore documents high water resistance through the front and shoulder fabric. That is the property that protects you when rain hits your chest and shoulders while you run.

At the same time, it is important to distinguish between the waterproofing of the fabric and that of the jacket as a whole. The test result applies to the fabric. The S2 Run Jacket is designed as an active running jacket and does not have the same construction as a fully waterproof shell jacket with, for example, taped seams.

The front and shoulder fabric has been tested for air permeability according to ISO 9237 and measures a maximum of 1 mm of air per second.

The test measures how much air can pass directly through the fabric. A low result means that very little air gets through.

This documents very low air permeability in the front and shoulder fabric. For you as a runner, it means cold wind has a harder time getting straight through the jacket in the areas of the body that usually meet the wind first.

This helps reduce the cooling effect of the wind while you run.

The front and shoulder fabric has been tested to ISO 4920 and achieves a minimum of 90, corresponding to an ISO rating of 4 out of 5.

The spray test measures how well the surface of the fabric resists getting wet when water hits it from the outside. In other words, it is a different test from the water column.

A rating of 4 out of 5 documents a high resistance to surface wetting. For you as a runner, this means raindrops largely stay on the outside instead of quickly soaking the surface.

The two water tests therefore each tell their own part of the story:

ISO 4920 shows how well the surface repels water.
ISO 20811 shows how much water pressure the fabric can withstand.

Together with the low air permeability according to ISO 9237, the three tests give a precise picture of the weather protection at the front and shoulders.

Because different parts of the body have different functional needs.

The front and shoulders need protection from wind and rain. The back, on the other hand, needs to deal with the heat and moisture your body produces while you run.

That is why a more open technical fabric is used on the back, with a focus on active moisture transport.

For you, this means the jacket does not just try to keep the weather out. The construction also works with the heat and moisture that build up from the inside when you run.

Yes.
The S2 Run Jacket is designed for cooler conditions and for running through autumn and winter, among other seasons.

The membrane in the front and shoulder fabric reduces air permeability, while the soft backing adds comfort and warmth.

An important part of how warm it feels therefore also comes from the wind having less chance to get through the front. When the cooling effect of the wind is reduced, the body can more easily hold on to the heat it produces itself.

How warm the jacket feels also depends on temperature, wind, intensity and which layers you wear underneath.

The S2 Run Jacket is particularly suited to easy runs, recovery runs and long runs in cold, changeable weather.

On these runs you are often out for longer, so protection from wind and rain becomes important. At the same time, the jacket still needs to handle the heat and moisture your body produces.

That is exactly why the construction combines protection at the front with a more open fabric on the back.

The Womens S2 Run Jacket has a regular fit with a cut developed for the female body.

The fit follows the body in a feminine way without becoming as tight as a race top. At the same time, the front and shoulder fabric is elastic, so the jacket can follow your shoulders, arms and upper body through the running motion.

The result is a jacket that looks clean and feminine and still feels natural to move in.

When you run, your arms, shoulders and upper body are constantly moving. A fabric with very little stretch can therefore feel more restrictive.

The front and shoulder construction of the S2 Run Jacket uses elastic materials on both sides of the membrane. That allows the construction to give along with your body.

This matters especially on longer runs, where the same movement pattern is repeated many thousands of times.

The Womens S2 Run Jacket has a zipped front pocket with an elastic back, so the pocket can adapt to contents such as a phone, cards or other small items.

The jacket also has an open back pocket, which is handy for gloves, a hat or a headband if you warm up along the way.

That makes the pockets more than just storage. They also help you manage changes in temperature during your run.

Yes. The S2 Run Jacket uses B-Flex reflective details.

The B-Flex reflective material is built up with glass microspheres that return incoming light back towards the light source.

The material has documented reflective performance and is certified to standards including EN ISO 20471.

This means the reflective material's ability to return light is documented according to an international standard. The certification applies to the B-Flex material and does not mean that the whole jacket is EN ISO 20471 certified.

An autumn and winter running jacket goes through a lot: repetitive movement, sweat, moisture, washing and strain from pockets and zips.

That is why the S2 Run Jacket uses seams finished with bar tacks for greater durability at the relevant stress points. The fabric is also constructed and tested to be used again and again.

A bar tack is a dense reinforcement of the stitching in places where the construction is exposed to extra pull. For you, it means that exposed areas get extra mechanical reinforcement exactly where it is needed most.

The S2 Run Jacket is Made in EU.

The fabrics are produced in Italy and the jacket is sewn in Lithuania. FUSION has its own production expertise in Lithuania, which creates a close link between product development and physical production.

This is especially relevant for a product like the S2 Run Jacket, where several fabrics, a membrane, pockets, reflective details and construction solutions all have to work together as one product.

The S2 Run Jacket is certified to OEKO-TEX® STANDARD 100.

This means that every component of the product has been tested for harmful substances. The testing therefore covers more than the main fabric and also applies to relevant components such as thread, zips, elastic, labels and transfers.

For you as a customer, this means chemical safety is documented at component level in the finished product.

Yes. The Digital Product Passport brings together information on materials, origin, production and the product's estimated climate footprint, among other things.

The climate footprint is calculated through a Life Cycle Assessment (LCA) in line with ISO 14040 and ISO 14044.

An LCA looks at the product across several stages of its life cycle instead of only one part of production. For you as a customer, this means the climate footprint is based on a defined method and can be linked to the specific product.

This makes the product story more transparent and makes it possible to look behind the general environmental claims.

Customer reviews particularly highlight how the jacket performs in cold and bad weather, as well as its comfort and versatility through the winter months.

One customer describes the jacket as a “climate shield”. That is actually a very accurate way of understanding the product.

The S2 Run Jacket is not just about keeping you warm. The construction has to protect the front of the body from wind and rain, while still letting the body deal with the heat and moisture it produces while running.

Because the price lies in the overall construction and the documented performance.

The front and shoulders use an Italian 3-layer laminate of approximately 200 g/m², tested in three different areas:

Water pressure: a water column of at least 10,000 mm according to ISO 20811.
Wind: a maximum air permeability of 1 mm/s according to ISO 9237.
Surface water: at least 90, equivalent to ISO rating 4 out of 5, according to ISO 4920.

Each test tells you something different: how hard it is for water to get through the fabric, how little air can pass through it, and how well the surface resists getting wet.

This is combined with a more open fabric on the back for moisture transport, an elastic men's fit, functional pockets, B-Flex reflective detailing with documented performance, bar-tack reinforced seams and European production.

On top of that come OEKO-TEX® STANDARD 100 and a Digital Product Passport.

So you are paying for a running jacket where materials, construction and placement are chosen to meet the body's needs while running – and where key properties are backed by concrete test results rather than general claims.