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Alpine Emergency Bivy
Ultra-compact thermal shelter for critical moments in the wild.
4.7 · 6 reviews-21%
Earn 80 TrekX points
The Alpine Emergency Bivy is a lightweight, packable survival shelter designed to retain body heat in extreme conditions. Built with reflective thermal fabric, it traps up to 90% of body heat while shielding against wind and moisture. Whether you're caught in sudden weather shifts or need an emergency overnight solution, this bivy is a must-have for any trekking, hiking, or climbing kit.
Ideal for
- ◆Emergency overnight shelter
- ◆Alpine and ridge traverses
- ◆Fast & light trekking
- ◆Climbing safety backup
Colour: Midnight
Specifications
shellAluminized PE thermal reflective film
weight120g
Heat retentionUp to 90% body heat reflection
DIMENSIONS (OPEN)210 × 90 cm
WATER RESISTANCEWindproof + water-resistant outer layer
SEAMSHeat-sealed edges
includesStuff sack + emergency whistle
Product Deep-Dive
D.01
How It's Made
Each bivy is constructed from a dual-layer polyethylene film that is vacuum-metalized with aluminum particles. This process creates a highly reflective surface capable of redirecting radiant heat back toward the body. The material is then precision-cut and heat-sealed along stress points to ensure windproof integrity without adding weight.
D.02
Thermal Performance
Unlike traditional fabric shelters, the Alpine Emergency Bivy works by minimizing radiant heat loss. In cold exposure scenarios, this reflective barrier can significantly reduce hypothermia risk by maintaining a stable microclimate around the body.
D.03
Packability & Deployment
Designed for ultralight kits, the bivy compresses into a palm-sized pouch. It can be deployed in under 10 seconds—critical when facing sudden weather changes or injury scenarios in exposed environments.
D.04
Durability & Limitations
While highly effective in emergencies, the material is intentionally lightweight and not designed for repeated long-term use. Avoid sharp rocks or crampon contact. For multi-day use, pair with a groundsheet or tarp.
D.05
Intended Use
Built for emergency scenarios across hiking, trekking, and climbing environments. Ideal as a backup shelter in alpine kits, trail running packs, or expedition safety systems where weight and space are critical constraints.
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Customer Reviews
4.76 reviews
5
83%
4
0%
3
17%
2
0%
1
0%
Lena BianchiRome, Italy
Dec 2025
Very easy to recommend
I started paying attention to the Alpine Emergency Bivy once conditions became less predictable. The experience felt more positive because the design feels built around habits rather than hype. The confidence factor ended up being higher than expected. Even with small flaws, I would still bring it again.
Verified purchaseRafael SilvaFunchal, Portugal
Sept 2024
Feels built for real use
I gave the Alpine Emergency Bivy a proper chance during a beginner camping trip where simple setup mattered. The biggest takeaway was that it handled constant use better than gear that looks more technical. It quietly justified its place in my gear rotation. It quietly earned its spot rather than demanding attention.
Verified purchaseTrekX reply
Thanks for the report from the route. Great to hear it performed well across changing conditions.
Maya TurnerBanff, Canada
May 2024
Solid performance over several trips
The Alpine Emergency Bivy quietly became one of the more used items during a lightweight overnight where every packed gram mattered. Over time, it helped make camp feel organized instead of chaotic. Overall, I would happily pack it again. It feels honest about what it is meant to do.
Verified purchaseChiara MeyerOslo, Norway
Aug 2023
Actually held up in rough conditions
The Alpine Emergency Bivy felt easy to trust during a mixed-weather weekend where gear stayed exposed all day. I noticed pretty quickly that the usefulness became more noticeable the longer I owned it. The performance felt believable, which matters to me. It feels matched to the Core level without trying too hard.
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Alpine Emergency Bivy
-21%