LOW ACTIVITY RATING 45°F.
MODERATE ACTIVITY RATING -5°F.
Live Your Adventure®
Both the shell and lining of this newest version of our iconic ultralight jacket are stretch fabrics for superior mobility. As before, the 800 fill Premium StormDown® retains its insulating loft even in wet conditions and allows for exceptional warmth without weight or bulk. Patented MicroTherm construction keeps the high-loft StormDown close to the body for maximum thermal efficiency and minimum bulk.
"The MicroTherm Stretch has found a place in my kit for alpine rock and multipitch climbing due to its durability and stretch. It provides the right amount of warmth on cold climbing days, and has been really resistant to rock abrasion, making it a go-to piece for those chilly summits."
Katie Lambert, Eddie Bauer Climbing Athlete
- 800 fill Premium Goose Down
- StormRepel® DWR finish
- Responsible Down Standard (RDS)-certified down insulation
- Trackmydown supply information on garment
Active/shaped: An athletic fit. Close to body without restricting mobility. Designed to fit over baselayers and lightweight midlayers.NOTE:
Temperature ratings are based on a controlled laboratory test, using low and moderate activity levels. Also consider: your sensitivity to cold and wind-chill; time of exposure; activity level; and use of layering.
MicroTherm is First Ascent's lightest, warmest down construction, which pairs Premium European Goose Down 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.
Our durable water-repellent (DWR) finish causes moisture to bead up on the surface so it rolls off or evaporates rather than soaking into the fabric.