.This jacket simplifies layering during brisk adventures. Its synthetic PrimaLoft® Gold P.U.R.E. (Produced Using Reduced Emissions) Insulation helps regulate your temperature, while stretch paneling in the sleeves and knit side panels make quick movements easy. Also available in Men's. Fleece sleeves and insulated chest make this the go to for a wide variety of weather conditions Easy for layering under any gear or over a shirt - lightweight yet warm