Men's's waterproof mountain walking jacket - MH900

Fitted cut. The inner volume allows you to wear it over a warm 2nd layer such as a down gilet or technical padded jacket. Construction and component allowing increased ease of movement in the shoulders and arms.

Deep and enveloping. 3-point adjustment system (height, depth and volume) thanks to 1 single elastic drawcord + toggle. Adjustable with 1 action!
Stiff visor for maximum face protection.

Outer: 4 large pockets fastening with waterproof zips. 2 chest pockets and two hand pockets.
Inner: 1 waterproof zipped pocket + 2 quick access mesh pockets.

Double tightening with an elastic cord and toggle at the hem.
Wrist tightening with Velcro.

3-layer component with membrane

- A coating is like a kind of paint applied to the inside of the fabric that makes the component waterproof while remaining breathable. It is often less costly than a membrane, and requires a lining for protection.
- The membrane is a kind of very thin plastic film (polyurethane) that makes the component waterproof while remaining breathable. It has the advantage of being more flexible, lighter, more durable and often more breathable than a coating.

- 3 layers: The membrane is glued between the outer fabric and the inner fabric. Used for resistant and high-performance jackets
- 2.5 layers: The membrane is glued under the outer fabric and protected by a thin film on the inside. Used for lightweight jackets.
- 2 layers: the membrane is glued only to the outer fabric; the inner protective lining is free. Used for comfortable jackets

The resistance of a fabric to water pressure is expressed in terms of the height in mm of a water column (test based on the ISO 811 standard). The higher the pressure, the more waterproof the fabric. A component with a 15,000 mm waterproof rating is therefore resistant to the pressure exerted by a 15,000 mm column of water (which roughly corresponds to a 4-hour thunderstorm).

This garment has been validated in a shower test under 450 L/m²/hour of water for 4 hours. This test reproduces the average conditions of a mountain storm.
For the most curious, all the details are here:
https://conseilsport.decathlon.fr/conseils/comment-mesurer-limpermeabilite-dune-veste-de-randonnee-tp_10515

To find out whether a fabric is breathable, we test its evaporative resistance or RET (based on the ISO 11092 standard). The lower the fabric's resistance, the more water vapour generated by physical activity can escape and the higher the fabric's breathability. For example:
RET < 3 = extremely breathable fabric
RET ≤ 6 very breathable fabric
RET ≤ 12= breathable fabric
RET ≤ 20 = little or no breathability

In addition to the breathability of the fabrics used, Quechua develops technical solutions (zips, air vents, mesh, etc.) to improve the overall ventilation of all its jackets and over-trousers designed for use on long hikes (Forclaz, Bionnassay and Helium lines). These ventilation systems regulate the temperature inside the garment while also helping to eliminate the perspiration generated by the body during physical activity.

The water repellent property of a fabric is its capacity to make water run off its surface without absorbing it to prevent the material from soaking up water.The water repellent property is obtained by applying a treatment to the outer surface.This treatment needs to be restored during the lifetime of the garment (we recommend every 3 washes).
All the details you need to restore the water repellent properties:
https://www.quechua.fr/conseils/comment-reactiver-la-deperlance-de-sa-veste-a_86425