In recent years, it seems that riding wear material of rain suits such as "Breathable Waterproof Material" have earned its reputation. Among them is the the well known, "GORE-TEX".
However, in recent years each manufacturer adopts its own moisture permeable and waterproof material, and it is a necessity to check the genre, as it has improved its multi function model although it is low price.
This time we will explain from the mechanism of "breathable waterproof material" to the performance. And the difference of the material of each manufacturer in an easy-to-understand way!
What is breathable waterproof material?
As with the breathable waterproof material, as you read, "It drains the moisture accumulated inside and does not let water from the outside pass inside". It is a material with such properties.
When examining rain wear, "water pressure resistance: XX, 000 mm or more" and "moisture permeability: XX, 000g or more! I often see these numbers. This figure means that the larger one is higher in performance which is mainly based on the test specified in the JIS standard.
With water-resistant pressure, place a cylinder with a bottom area on the fabric. And "How much water did you put into the tube and it bleeds out to the backside of the fabric?" I will decide.
Therefore, "water pressure resistance: 10,000 mm" means that the water in the cylinder was able to withstand a height of 10,000 mm (= 10 m). Numerals that are common in the performance of breathability are determined by "How many grams of water vapor could be discharged per 24h per 1 sq."
Therefore, "Breathability: 5,000 g / ㎡ / 24h" means that we were able to discharge 5,000 grams of water vapor in 24 hours b>. In general, water pressure resistance of rain wear used for motorcycles is said to be borderline "10,000 mm or more".
However, it is supposed to run under 60 km / h and when traveling on a highway such as 100km / h "water pressure resistance: 20,000 mm or more " is required.
I checked the water pressure resistance with a certain famous manufacturer's HP
•20,000mm -storm
•10,000mm-heavy rain
•2,000mm -medium rain
•300mm-light rain
As what they said, it is a numerical value for normal use even more demanding specifications are desirable for motorcycles. For moisture permeability, it is not always necessary for the original purpose of rain wear. However, the sweat at the time of riding is actually quite considerable, especially when it is said that the sense of jimyezime at rainy weather is extremely disgusting ....
The standard moisture permeability of rain wear for motorcycles is about 5,000 to 8,000 g / m 2 · 24h, but it may be a good idea to remember the moisture permeability "13, 500 g / ㎡ / 24 h" of GORE-TEX® which is a typical moisture permeable waterproof material.
So far, I have written about water resistance and moisture permeability, but why it does not pass water?
•Mechanism
Most moisture-permeable and waterproof materials are used to sandwich film-like materials with water-repellent outer material and water-absorbing and soft touch lining. The film-like material has an ultra-fine hole of "several hundred million pieces per square".
Ultra fine holes are smaller than rain and water droplets and are larger than water vapor molecules, so rain and water drops can not pass through and maintained waterproofness. Since water vapor can pass and diverge, it seemingly has opposite functions that ensure moisture permeability.
Material comparison by manufacturer!
| Material name | GORE-TEX® | G Vector Professional | Dry master X | Berg Tec EX |
| (Initial) water pressure resistance | 45,000 mm or more *1 | 40,000 mm or more *1 | 20,000 mm or more *2 | 30,000 mm or more *2 |
| Moisture permeability (degree) | 13,500 g / m 2 · 24 h achieved *3 | 20,000 g / m 2 · 24 h achieved *4 | 10,000 g / ㎡ · 24 h or more *5 | 16,000 g / ㎡ · 24 h *2 |
| Main Brands | GOLDWIN | GOLDWIN | RS TAICHI | MIZUNO |
| Price Range | Approximately 45,000 yen~ | Approximately 18,000 yen~ | Approximately 15,000 yen~ | Approximately 15,000 yen |
*1: B-2 method / Eyeplate specification *2: JIS-L 1092 High water pressure method *3: B-2 method *4: B-1 method *5: JIS L-1092 High water pressure method
•GORE-TEX®
It is made of thin materials of 2 to 3 layers (layers) chiefly adopted by GOLDWIN, and is a highly functional material with outstanding waterproofing and breathability and windproofness reputed. Three layers hold the Gore-Tex membrane (moisture permeable waterproof material film) from the front and the back. The 2 layers are the ones using nylon and other fabrics on the front side, and the membrane on the back side.
[Webike Japan Product Page]
•Rain wear adopted by GORE-TEX®
•G Vector Professional®
GOLDWIN adopts a highly waterproof material that realizes lightweight and compact by a three-layer structure without lining. Besides being excellent in waterproofness and moisture permeability, it also has durability of "100 wash 3 grade" that keeps 80% water repellency performance after 100 washing tests. It is also reasonably priced compared to Gore-Tex.
[Webike Japan Product Page]
•G Vector Professional®
•DRYMASTER-X
Water permeable waterproof material adopted by RS Taichi. It is a microporous membrane based on polyurethane which realizes homogeneous microporous structure and high performance. Micropores are smaller than rain and water droplets and are larger than water vapor so that rain and water droplets can not pass through, maintaining waterproofness, and water vapor can pass and diverge, ensuring moisture permeability compatible features contradictory. Waterproof processing is applied to the outer material to further enhance the waterproof effect.
[Webike Japan Product Page]
•Rain wear adopted by DRYMASTER-X
•Berg Tec EX
Waterproof breathable material that Mizuno independently develops and adopts as a general sports maker. The new water repellent formulation has been applied fine processing such that uniform water repellency is distributed to every single thread. It is a strong water repellent process that raindrops as well as wearing and jumps over the surface of the fabric and scatters.
Moreover, with its own three-layer structure, it can withstand the invasion of water even under conditions of hydraulic pressure for a long time. Also excellent in stretch, guarding rain even in intense movements. Make the utmost use of scientific principles based on molecular structure, while shielding out rain and water drops, diverge the moisture inside the ware to the outside and suppress stuffiness.
•BERG TEC EX adopted rain wear here(*Japanese)
•Here is the rain wear in which the material introduced this time is adopted
•Rain wear adopted by GORE-TEX® is here
•Click here for rain wear adopted by G Vector Professional®
•Rain wear adopted by DRYMASTER-X is here
[Webike Japan Product Page]
•BERG TEC EX adopted rain wear(*Japanese)
2018 Rain Item Special page is here!
