A legendary jacket, redesigned for tomorrow
The FITZ ROY WARM BY CLIM8®. The name resonates like a quest, an aspiration, a challenge. For decades, mountaineers from around the world have dreamed of conquering this Patagonian giant. And for over a century, Millet has accompanied them on their most daring adventures.
Today, we are reinventing Millet’s iconic equipment with a revolutionary innovation: Clim8® smart heating technology integrated directly into the FITZ ROY WARM jacket.
It’s not just a jacket. It’s your ultimate thermal ally.

Smart Heating: When Technology Understands Your Mountain
At high altitudes or in extreme temperatures, the cold doesn’t wait. Conditions can change in a matter of minutes. Effort alternates with rest periods. The icy wind paralyzes you as you catch your breath.
This is precisely where Clim8® changes the game.
Thanks to integrated smart sensors, the FITZ ROY WARM BY CLIM8® jacket analyzes in real time:
- Outdoor conditions
- Your physical activity
- Your body temperature
The system automatically adjusts the heat to maintain your optimal thermal comfort, whether you are active or completely at rest. No more shivering during bivouacs. No more overheating during sustained effort.
Perfectly calibrated warmth. At all times.
Millet Design, Extreme Performance
The FITZ ROY WARM BY CLIM8® makes no compromises:

- Superior insulation: A thermal shell designed for the harshest conditions, combined with Clim8® technology for unparalleled protection.
- Maximum lightness: Every gram counts in the mountains. The jacket remains remarkably light despite its powerful heating capabilities.
- Freedom of movement: Millet’s technical design guarantees total mobility, essential for difficult passages or climbs.
- Discreet integration: Battery, sensors, and heating zones are seamlessly integrated. No bulk, no discomfort.
Who is it for? What is it for?
The FITZ ROY WARM BY CLIM8® is designed for those who refuse to compromise:
- Expedition mountaineers: protect yourself effectively at altitudes where every degree counts.
- Ski tourers: alternate between effort and rest without losing heat.
- Winter explorers: bivouac with confidence, even at -30°C.
- High-altitude workers: stay productive and safe all day long
- Committed adventurers: push your limits with reliable protection
By eliminating body temperature fluctuations, Clim8® technology preserves three critical elements: your performance, your safety, and your endurance.
FITZ ROY WARM BY CLIM8®: The Future of Mountaineering Is Here
At the intersection of tradition and innovation, the FITZ ROY WARM BY CLIM8® jacket marks a new era in mountain gear.
Explore higher. Stay longer. Go further.
Welcome to the smart generation of high-altitude mountaineering.