The GREAT ASCENT SPORT JACKET is the choice of our world-class riders and skiers because it’s a lightweight design that provides a comfortable thermal layer. It’s made with a soft fabric called Pertex Microlight that’s tightly woven to prevent excess heat loss, and the ultra-fine fibers of PrimaLoft SPORT fill offer premium thermal shielding. We used raglan sleeves to free movement because when you’ve got this much comfort going, you’ll be zoned-in on defying your limits.