What Our Gearhead(R) Experts Are Saying:"This thing breathes insanely well. I wear it for bootpacks and storm laps-it's perfect for layering when you need just a touch of warmth without overheating."Designed for uphill missions, sidecountry bootpacks, and active freeride days, the Nano-Air Ultralight Freeride Jacket delivers lightweight insulation and exceptional breathability in a fully Fair Trade Certified(TM) package. The hybrid construction places 20g FullRange(R) insulation in the lower body for just-right core warmth, while the upper body and arms feature stretchy, air-permeable materials that keep heat and moisture in balance during high-output activity. We love the minimalist design, which trims excess weight without sacrificing performance. And thanks to a bluesign(R) approved, PFAS-free construction made with 100% recycled materials, it's a responsible choice for pushing boundaries in the backcountry.