Mountaineering Jacket - Orange

Ref :
Key feature
Durable, waterproof, lightweight and comfortable to wear, adjustable hood for wearing over a helmet. Under arm ventilation zips, Double taped zips, 3 large pockets
Users reviews
4.03 / 5 34 ratings

Products benefits

Fabric resistant to 10 000 mm water pressure after 5 washes
Durable fabric (147 g/sqm), jacket with reinforcements on shoulders and hips
9<RET<12 breathable membrane under arms for extra ventilation
Freedom of movement
Ergonomic cut, preformed elbows, adjustable hood
Hood can be worn with a helmet. Two-way zip for easy access to harness
Environmental impact
Life cycle comparison: Men's waterproof jacket -


Total weight
580 g in size L
Main fabric : 100.0% Polyamide (PA) Pocket : 74.0% Polyester (PES), Pocket : 26.0% Elastane
Approved by
team SIMOND mountaineers during numerous ascents. Especially for ice climbing (ex: Repentance / Cogne / Italy _ Goulotte Rébuffat / tour Ronde / Chamonix)
Designed to :
mountaineer, climber looking for maximum protection from rain and rock face abrasion
2 years


Machine wash at 30°C

Additional information

Fabric waterproofing
We measure a fabric's resistance to a water column, in mm (based on the ISO 811 standard). The higher the water pressure resistance, the more waterproof the fabric. Components with 2000 mm waterproof rating can resist 2000 mm of water pressure (which is roughly equivalent to a rain shower lasting 2 hours). With waterproofing over 10 000 mm, the Mountaineering Light jacket offers an extremely high level of waterproofing.
Garment waterproofing
The Alpi jacket was approved in a shower test under 100 litres of water / sqm / hour for 3 hours. This test reproduces the conditions of a heavy mountain downpour.
Fabric breathability
To find out whether a fabric is breathable, we test its evaporate resistance or RET (based on the ISO 11092 standard). The lower the fabric's resistance, the more moisture, generated by an active body, is evaporated, and therefore the higher the fabric's breathability. We consider that if - RET < 9 = highly breathable fabric - 9<RET<12 = breathable fabric - RET > 12 = slightly or not breathable fabric. The Mountaineering jacket has a RET between 9 and 12
Garment breathability
On top of the main fabric's breathability, the choice of including mesh lined pocket helps to improve the jacket's thermal comfort, whilst helping to create air flow inside jacket by opening pockets. The taped zip under the arms, helps to create air flow once opened, to further enhance ventilation. The adjustments at lower end of jacket (tightens with elasticated drawcord and toggle) and cuffs (rip-tab strap) allow you to adjust the air flow through these areas.
The pockets are positioned to be used as hand warming as well as for being accessible when wearing a harness over the jacket. The Alpi Light jacket is also comes with a chest pocket and an inner zip pocket.
The Alpi jacket's main zip is a new generation zip that offers the same waterproofing as the classic silicone zips (similar to the pocket zips) while being more flexible, which improves the jacket's compression when packed away. Plus, this zip is easier to handle, which helps to make it longer lasting. The 2-way zip allows you to use a harness under the jacket. The zip pulls are easier to handle with gloves.
The Alpi jacket's hood is large enough to wear over a mountaineering helmet. It is height and depth adjustable according to your needs. A semi-rigid visor offers better forehead and eye protection. The high collar provides protection for the lower part of your face.
A rating for comparing products environmental impact
Product's environmental impacts are calculated throughout its life cycle and with different indicators.An overall ABCDE rating is performed to help you easily identify the products with the best environmental performance by comparing the same type of products with each other (t-shirts, trousers, backpacks,...). Decathlon is a committed stakeholder in this environmental labelling approach. To get more information:

Users reviews

4.03 / 5 34 ratings
30 users recommended this product

  • Man
    50-59 years old
    14 September 2017
    Use since 7 to 12 months
    That review has been deposited on this product version
    Mountain Jacket size M

    I've been using this jacket now for around 8 months. First a bit in the miserable Scottish winter we had, then for instructing work in the Lake district and finally in April and May in the Alps. I have to say that for the price I'm quite impressed. First of all it fits in the right places, hood is perfect over helmet and even without it still hugs around face. Arms are not to long and have good movement, water proofing is comparable with much more expensive jackets on the market. Only 2 down sides are as usual the pockets are made for the street punter not the climber! Why don't the have them next to the central zip where you can access them? Also its not as breathable as they claim, pit zips help along with careful choice of under layers, but still for active use it can be hot and sweaty and needs more managing in UK enviroment, not to bad In alpine enviroment though! All in all I'll get another one when this wears out, though it may be another year yet as it seams durable so far!

  • Man
    50-59 years old
    21 February 2018
    Use since 2 to 8 weeks
    That review has been deposited on this product version
    Schöne Hardshell

    Tolle Jacke, absolut Wind- und wasserdicht. Etwas steif ohne jedoch die Bewegung einzuschränken.

  • Man
    40-49 years old
    29 September 2017
    Use since 2 to 8 weeks
    That review has been deposited on this product version
    Unter den Armen etwas zu eng (Achseln)

    Unter den Armen etwas zu eng (Achseln), und ich hab keine dicken Arme. Daher eher nicht für "Zwiebelprinzip" geeignet, mit Pulli / Fleece wirds noch enger.

    Also eine Herbstjacke mit knalliger Herbstfarbe ;-)

    Sehr gute, lange und vorne weite, enger verstellbare Ärmel. Gute, grosse und anpassbare Kapuze.

    Ein paar Taschen mehr (innen) wären gut.
    Preis - Leistung bei 180 Euro gerade noch ok.

    Ich war eine Woche im leichten Regen unterwegs, Jacke wirkt relativ winddicht, ist aber auch nicht besonders atmungsaktiv.