The MP+® membrane is a technology specially designed to protect trail runners from rain and all weather conditions. The features of the MP+® Membrane are:
The Schmerber is the unit of measurement for waterproofness.
1 Schmerber = 1 column of water 1 mm high. A garment with a value of 10,000 Schmerber, that is 10,000 mm, can withstand 10 m of water! A garment is considered fully waterproof from 20,000 Schmerber onwards.
The MVP measure (Moisture Vapour Permeability) is the unit of measurement for breathability.
This measure calculates the amount of water (in vapor form) that the fabric allows to pass through in 24 hours. The higher the value, the more favourable the breathing.
In trail running, rain and dampness always end up showing up.
The combination of water-repellent fabric (DWR) with the MP+® membrane acts as an effective waterproof barrier, able to withstand heavy rainfall while remaining suited to exertion.
Being protected is not enough if moisture remains trapped inside.
The MP+® membrane is designed to allow water vapor generated by exertion to escape. It promotes the evacuation of sweat and limits moisture buildup to maintain stable comfort.
The first line of defense takes place on the surface.
The outer fabric receives a durable water-repellent (DWR) treatment without PFAS, which allows water to bead up and slide off without penetrating the textile. This water repellency limits fabric saturation, improves the overall breathability of the garment, and extends the effectiveness of the MP+® membrane over time.
Unisex waterproof jacket
175 g
TOP EXTREME ULTRA MP+® 20K/20K
Women's waterproof jacket
205 g
Women's waterproof jacket
180 g
TOP EXTREME ULTRA MP+® 20K/20K
Men's waterproof jacket
225 g
Men's waterproof jacket
200 g
TOP EXTREME ULTRA MP+® 20K/20K - 2025
Men's waterproof jacket
225 g
TOP EXTREME MP+® 20K/20K - 2025
Men's waterproof jacket
200 g
TOP EXTREME MP+® 20K/20K - 2025
Women's waterproof jacket
180 g
Unisex waterproof trail pants
85 g
Waterproof tent
800 g
Unisex cap
80 g
Unisex trail gloves
35 g
Unisex trail gloves
20 g
We offer three levels of waterproof jackets: ULTRALIGHT 3.0, TOP EXTREME, and TOP EXTREME ULTRA. All are equipped with the MP+® membrane and meet the same standards of lightness, performance, and reliability during races.
The ULTRALIGHT 3.0 focuses on minimalism and weight optimization, while the TOP EXTREME offer more features and versatility.
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| Waterproofness | ||||
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| Breathability | ||||
| Breathability | ||||
| Weight | ||||
| Weight | 175 g | 225 g | 200 g | 340 g |
| Gusset | ||||
| Gusset | ||||
| Color | ||||
| Color | ||||
| Price | ||||
| Price |
Regular price
€279,90 EUR
Unit price
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Unavailable
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Regular price
€219,90 EUR
Unit price
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Unavailable
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Regular price
€179,90 EUR
Unit price
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Unavailable
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Regular price
€159,90 EUR
Unit price
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Unavailable
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The MP+® membrane is designed to meet the specific demands of trail running, where effort is continuous and intensity varies.
It aims to provide a balance between rain protection and sweat evaporation, to limit moisture inside the garment during the run.
Unlike a traditional waterproof jacket, a jacket equipped with the MP+® membrane is designed to be worn during activity, with special attention to breathability and comfort in motion.
In real practice conditions (rain, wind, prolonged effort), the MP+® membrane allows you to:
These features make it a suitable solution for dynamic outdoor activities like trail running, where conditions and intensity can change quickly.
There is no universally “best” membrane. Performance mainly depends on the operating principle and the balance between waterproofness and breathability.
The MP+® membrane is a so-called hydrophilic (non-microporous) membrane. It has no pores: it blocks liquid water and evacuates sweat through a water vapor transfer driven by differences in humidity and temperature between the inside and outside of the garment.
This operation notably allows:
👉 In practice, it is more relevant to compare jackets based on their waterproofness ratings (Schmerber), breathability, and overall design, rather than looking for an absolutely “better” membrane.
The performance of an MP+® membrane is expressed with two indicators:
These values help compare products and understand their level of protection and comfort during exercise.
As a French brand, pioneer in Trail Running, based in Chartreuse, Raidlight is committed to designing and manufacturing eco-responsible technical, lightweight, and high-performance equipment to outfit all trail runners from head to toe. Since 1999, by sharing our expertise and commitment with a community of enthusiasts, we believe in the development of French-style Trailrunning—that is, a French brand that is committed, bold, dynamic, and proud of its products!
