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Men's MicroTherm™ Down Shirt

Men's MicroTherm™ Down Shirtclearance

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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 Lightweight 1.06 oz 20-denier ripstop nylon with Stormrepel™ DWR finish
  • 800 FILL POWER PREMIUM EUROPEAN GOOSE DOWN Down-packed micro-baffles keep you warm with minimal weight and bulk
  • Integrated stretch panels Increase breathability, improve range of motion and allow for a trim, athletic fit
  • Lightweight and packable Stows easily in small spaces
FIT


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.

  • Low-profile invisible hand pocket zippers 
  • Elasticized cuffs Seal in heat
  • Packs into its own pocket
  • interior carabiner clip-in loop
  • 800 Fill Premium European Goose Down
  • 100% Polyester shell; 800 fill down insulation
  • Center back length: Reg. 26 1/4", Tall 28 1/4'
  • Weight: 9.5 oz
  • Imported
  • Machine wash

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.

Peter Whittaker

" I did not take this shirt off for three weeks in Antarctica. Slim enough to wear close to my body, unbelievable movement under other layers, and soft enough to sleep in at night. One of my new favorites. "

— Peter Whittaker

Peter Whittaker
Regular Item #:
Regular -
$169
Tall -
$189
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Men's MicroTherm™ Down ShirtThe lightest down layer in our long 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. 800 fill power premium European goose down traps core heat, while the lightweight ripstop shell features a StormRepel® DWR finish to shed light precip and light snow. Stretch panels add mobility when reaching, twisting or turning. A simple, low bulk hem design eliminates hardware and trims from under harnesses and hipbelts.
Note: the fit is trim and athletic, closer to body than most down pieces, designed to fit over a baselayer but allow for a wide variety of soft shells and hardshells to be worn on top. If you want to wear this piece more frequently as an outer layer we suggest you go up one size.
Eddie Bauer - EST. 19204.056099891662598
Men's MicroTherm™ Down Shirt