Live Your Adventure™
The lightest down layer in our history, this instant warm-up is the ideal weight for layering or packing. The adaptable design features an athletic cut that allows this critical insulator to function expertly as a mid, outer or emergency layer.
- Water-repellent, windproof shell
- 800 FILL POWER PREMIUM EUROPEAN GOOSE DOWN
- Integrated stretch panels
- Lightweight and packable
Active Fit with Stretch: Our active fit is cut closer to eliminate bunching or binding while also enabling a liberating range of motion during any outdoor pursuit.
MicroTherm™ is First Ascent's lightest, warmest down construction, which pairs high quality 800 fill with some of the narrowest channel baffling in the outdoor industry. The narrow-channel construction prevents down migration and keeps the fill more evenly distributed throughout the garment—minimizing the cold spots and filling voids that could allow body heat to escape. This elevates the overall thermal value of MicroTherm™ to an extremely high degree, meaning more warmth for the same weight, reducing overall bulk and allowing for easier layering as well as greater packability. We like to emphasize it's the warmest, lightest down we've ever made.