STAY WARM. STAY PROTECTED. The Norrøna Trollveggen dri2 Down Jacket combines reliable waterproof protection with expedition-level down insulation, making it ideal for harsh winter conditions. The dri2 membrane keeps out snow, wind and rain, while premium down provides exceptional warmth during cold belays, summit stops and demanding mountain days.
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Norrona Trollveggen Dri2 Down800 Zip Hooded Jacket Overview
The Norrona Trollveggen Dri2 Down800 Zip Hood is Norrona's warmest and most protective waterproof down jacket, designed for mountaineering, belaying, and technical winter use in severe weather.
Developed for cold, exposed alpine environments, it combines 800 fill-power down insulation with Norrona's dri2 waterproof membrane, delivering exceptional warmth and reliable protection against wind and snow. The jacket's box-wall construction improves loft performance, while synthetic insulation reinforcement in high-exposure areas maintains warmth even in damp conditions.
With its longer cut, helmet-compatible hood and expedition-ready feature set, the Trollveggen dri2 Down800 Zip Hood is built for climbers and mountaineers operating in demanding winter mountain environments.
Best For
- Mountaineering
- Winter alpine climbing
- Belaying in cold conditions
- Ski touring transitions and stops
- High-altitude trekking
- Severe cold-weather expeditions
Materials & Construction
Outer Fabric — dri2 Waterproof Membrane Protection
The jacket uses Norrona's dri2 waterproof-breathable membrane, delivering reliable protection against snow, wind, and moisture during extended exposure in alpine environments.
With a 20,000 mm waterproof rating, the dri2 membrane provides dependable weather resistance while maintaining breathability during periods of movement between static belays and climbing sections.
The outer fabric is constructed from 94% recycled 40D nylon with 6% Vectran ripstop reinforcement, improving durability and abrasion resistance in high-wear mountain environments.
Insulation — 800 Fill Power Down with Synthetic Reinforcement
The Trollveggen dri2 Down800 Zip Hood features 800-fill-power down insulation, delivering excellent warmth-to-weight performance for demanding alpine conditions where reliable thermal protection is essential during static periods, such as belaying or transitions.
The jacket contains 350 g of down insulation in size Large, supported by a box-wall construction that allows the down to fully loft, improving warmth retention and reducing cold spots compared with stitched-through designs. This construction is particularly effective in severe cold environments where maintaining insulation efficiency is critical.
To improve performance in moisture-prone areas, Thermo80 synthetic insulation is strategically placed in high-exposure zones, including the shoulders, elbows, back panel and hood. These areas are more likely to experience compression from pack carry or contact with snow and ice, and the synthetic insulation helps maintain warmth even if damp conditions occur during technical mountain use.
Lining — Recycled Nylon Comfort Layer
The internal lining uses 20D recycled nylon plain-weave fabric, creating a lightweight, comfortable interior that supports insulation performance while improving durability with repeated use.
Features & Technologies
Box-Wall Down Construction
The box-wall construction improves insulation efficiency by allowing the down to maintain full loft across the jacket, reducing cold spots compared with stitched-through designs.
This construction is particularly important for static use in cold mountain environments.
Helmet-Compatible Hood
The jacket features a fully adjustable, helmet-compatible hood that fits securely over climbing helmets while maintaining peripheral visibility.
Internal adjustment allows the hood to be fine-tuned for both helmet and non-helmet use.
Extended Protective Cut
A slightly longer back length improves coverage during belaying and static mountaineering use while reducing cold-air exposure around the lower torso.
Reinforced High-Exposure Zones
Strategic Thermo80 synthetic insulation placement helps maintain warmth in moisture-prone areas such as shoulders and elbows, where down insulation may compress or become damp.
Expedition-Ready Pocket Layout
The jacket includes multiple large storage options designed for use while wearing gloves or a harness:
- Two mid-mount hand pockets
- One napoleon chest pocket
- Two internal stretch dump pockets
They provide easy access to gloves, skins and essential equipment during winter use.
Technical Articulated Sleeves
Articulated sleeve construction improves mobility during climbing movement and technical positioning on steep terrain.
Durable Water Repellent Finish
A CO DWR treatment improves water-shedding performance on the outer surface fabric while providing long-term weather protection.
Fit & Sizing Guidance
Fit Profile
The Trollveggen dri2 Down800 Zip Hood features a technical alpine fit that accommodates layering underneath while maintaining mobility during climbing and mountaineering.
Layering Compatibility
The fit allows space for base layers, midlayers and lightweight insulation layers, making it suitable as a primary outer insulation piece in cold mountain conditions.
Features Summary
- dri2 waterproof breathable membrane
- 20,000 mm waterproof rating
- 800 fill power down insulation
- 350 g down fill in size Large
- Thermo80 synthetic reinforcement zones
- Box-wall insulation construction
- Helmet-compatible adjustable hood
- Vectran ripstop reinforced outer fabric
- CO DWR treatment
- Multiple alpine-accessible storage pockets
- Internal stretch dump pockets
- Articulated sleeves
- Extended protective back length
Explore More Winter Insulation
If you are preparing for cold-weather mountain objectives, it may also be worth exploring our wider range of mountaineering down jackets and winter insulation layers.
Norrona's Trollveggen range is designed specifically for technical mountaineering and alpine climbing, inspired by the Troll Wall in Norway, one of Europe's most demanding vertical rock faces. The collection focuses on durable fabrics, helmet-compatible hoods and harness-friendly pocket layouts that support movement and protection in serious mountain terrain.
If you are building a full alpine layering system, it is well worth exploring other Norrona Trollveggen jackets, midlayers, and trousers, which are designed to work together as a technical mountaineering kit for cold, exposed, and changeable mountain conditions.
Trekitt Review The Trollveggen dri2 Down800 Zip Hood is the sort of jacket you can reach for when the forecast turns properly serious and standing still becomes the coldest part of the day. It's noticeably warmer and more protective than typical down layers we test, especially during long winter belays, exposed stops, and slow-moving alpine days when wind, spindrift, and contact with snow start to overwhelm lighter insulation. This is clearly built for climbers and mountaineers operating in harsh winter mountain conditions rather than for fast-paced use on milder days.
Do You Still Need a Shell Over It? In many winter climbing and mountaineering situations, you don't. The dri2 waterproof membrane means this jacket can handle spindrift, snow, and exposed belays without needing an additional shell layer. That makes it particularly useful during transitions and static periods where adding another jacket would slow things down or add unnecessary bulk to your system.
Why Choose This Over a Standard Down Jacket? Unlike a typical lightweight down jacket, this one is designed to keep performing in severe mountain weather. The waterproof dri2 outer, box-wall construction and synthetic reinforcement in moisture-prone zones make it a much better choice for wet snow, pack pressure and prolonged exposure in harsh alpine conditions.
FAQ
Is the Trollveggen dri2 Down800 Zip Hood fully waterproof?
It uses Norrona’s dri2 waterproof membrane with a 20,000mm waterproof rating, so it offers serious protection against snow, wind and prolonged mountain weather. That makes it much more protective than a standard down jacket.
Is this jacket too warm for general winter walking?
For many people, yes. This is an expedition-level insulated jacket designed for severe cold, static use and exposed mountain conditions rather than everyday winter walks or fast-moving hikes.
Can I wear it over other layers?
Yes. The technical alpine fit is designed to accommodate layering underneath, including base layers, midlayers and lighter insulation pieces when needed.
Is it suitable for belaying in winter?
Yes. That’s one of its strongest use cases. The high warmth, longer cut and protective construction make it particularly well suited to cold belays and static mountain use.
Why does it use synthetic insulation in some areas?
The synthetic Thermo80 insulation is placed in high-exposure zones like the shoulders, elbows, hood and back panel to help maintain warmth where moisture, snow contact or compression are more likely.
Is it packable?
For the level of warmth it provides, it’s efficient, but this is not a tiny ultralight emergency layer. It’s a substantial expedition jacket designed to prioritise warmth and protection over minimal bulk.
Will the hood fit over a climbing helmet?
Yes. The hood is helmet compatible and adjustable, so it can be fine-tuned for use both with and without a helmet.
Is it suitable for ski touring?
It can work very well for transitions, stops and cold-weather static periods during ski touring, though it is generally too warm and bulky for sustained high-output uphill movement.
What makes box-wall construction better than stitched-through down?
Box-wall construction allows the down to loft more fully and reduces cold spots, which improves insulation efficiency in very cold conditions compared with stitched-through designs.