Men's Atmosphere Stormtech SSJ-1 3-in-1 System Jacket — Waterproof & Extreme Cold

Reference STSSJ1

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SUMMARY

One jacket, three configurations — from mild weather to extreme cold.

The Stormtech Atmosphere SSJ-1 is a modular 3-in-1 jacket wearable all year round. Waterproof H2XTREME® 5K/5K shell + zip-out polyfill liner for use down to -20°C*. Detachable hood, welded cuffs, dropped back hem, internal media port. It has already climbed Kilimanjaro. Backed by a 5-year warranty. Women's version available.

TECHNICAL DESCRIPTION

Men's 3-in-1 High Mountain Jacket Stormtech Atmosphere SSJ-1

Protection Cold & Rain

Resistance 5,000 mm / 5,000 g/m²/24h

System Modular 3-in-1

Thermal Protection 0°C to -20°C*

Technical Membrane H2XTREME® 5K / 5K — Zip-Out Polyfill Liner

One jacket, three configurations — from mild weather to extreme cold

The Stormtech Atmosphere SSJ-1 is a 3-in-1 jacket designed to adapt to any condition — from spring showers to harsh winters down to -20°C*. Its waterproof H2XTREME® 5K/5K shell and zip-out polyfill liner form a modular system that moves with the weather. Wearable all year round, it is the most versatile outdoor investment in your wardrobe. Women's version available.

Grand-Froid Expert View

"The SSJ-1 is the jacket you reach for when you're not sure what the weather has in store. Shell alone for mild conditions, liner alone as an urban fleece, both together to push down to -20°C — it adapts to everything.

This is a jacket that has already climbed Kilimanjaro. Versatility isn't a marketing claim here — it's a field reality. For outdoor enthusiasts who want a single piece of kit capable of carrying them through every season."

Stormtech Atmosphere SSJ-1 Men's 3-in-1 High Mountain Jacket

What is it designed for?

Hiking and trekking in changeable conditions — spring, autumn, winter
Mountaineering and high-altitude use down to -20°C in full configuration
All-season outdoor travel with a single versatile piece of kit
Urban use in cold or wet weather — shell or liner depending on conditions
Any outdoor activity requiring lightweight, adaptable protection

Thermal Protection & Modularity

Recommended use from 0°C to -20°C*. The SSJ-1 works across three configurations:

Shell alone — waterproof and windproof, ideal from +15°C to 0°C for active use.
Liner alone — lightweight insulating fleece, perfect for cool indoor temperatures or dry conditions.
Shell + Liner — full system for severe winter conditions down to -20°C.

How to get the best from it?

The Grand-Froid 3-Layer System:

1st layer — breathable thermal base layer: wool for versatility and natural comfort, synthetic for breathability and value. Both work — the key is that it moves moisture away from the skin
2nd layer — the SSJ-1 liner: the integrated insulating fleece — warm, breathable, usable alone or zipped into the shell
3rd layer — the SSJ-1 shell: waterproof and windproof outer protection against rain, wind and snow

Tip: Get dressed in a cool environment just before heading out — layering up in a heated room saturates your base layers with moisture and reduces their effectiveness from the very first minutes of exposure.

Technical Features

H2XTREME® 5K / 5K Membrane: waterproof, breathable and 100% windproof
Zip-out polyfill liner: detachable insulating layer — usable alone or combined with the shell
Articulated adjustable hood: precise adjustment for optimal face protection
Detachable hood: quick removal for a more urban look or in milder conditions
Welded adjustable cuffs: watertight, seamless wrist closure
Zippered pockets with storm plackets: personal items protected from water ingress
Brushed tricot neck warmer and pocket lining: immediate thermal comfort against the skin
Internal media port: protected routing for headphone cables
Adjustable drawcord hem with dropped back: enhanced lower back protection — no draughts on the move
Two-tone design: technical contrast styling — suited to both field and urban use
Stormtech 5-year warranty: a full commitment to long-term product durability

Composition

Shell: 97% Polyester / 3% Spandex bonded with 100% Polyester Fleece — 300 g/m²
Liner: 100% Polyester Ripstop — 40 g/m²
Construction: H2XTREME® 5K / 5K membrane, welded cuffs

Standards & Commitments

Thermal rating: designed and tested from 0°C to -20°C
Waterproofing 5,000 mm: effective protection against moderate to heavy rain
Breathability 5,000 g/m²/24h: moisture vapour evacuation during physical effort
Pure Earth by Stormtech™: integrated environmental responsibility programme
Stormtech 5-year warranty: a commitment to durability — less replacement, less waste

Size Guide

Regular fit — designed to be worn with a thermal base layer and the integrated liner. If in doubt, size up.

Body measurements (cm)	S	M	L	XL	2XL	3XL	4XL	5XL	6XL
Chest	89–97	97–104	104–112	112–119	119–127	127–135	135–142	142–150	150–163
Waist	74–81	81–88	88–98	98–108	108–118	118–128	128–138	138–149	149–159
Hips	86–94	94–102	102–109	109–114	114–121	121–127	127–133	133–140	140–146
Sleeve length	84–89	85–90	88–93	90–95	91–97	93–98	93–98	94–99	94–99

Women's version available →

Care & Durability

Washing: 30°C maximum, gentle cycle, zips closed — wash shell and liner separately
Drying: hang to dry or tumble dry on a low heat setting
Do not: iron or dry clean
DWR reactivation: after washing, tumble dry the shell on low heat for 20 minutes to restore the durable water repellent finish

Returns & Exchanges — 30 Days

You have 30 days from the date of receipt to request a return or exchange on this item.

Why choose the Atmosphere SSJ-1?

The SSJ-1 is the most versatile outdoor jacket in the Stormtech range — one jacket, three configurations, all year round. Shell alone for rain, liner alone for dry cold, both together to push down to -20°C. It has already climbed Kilimanj