Crafted with breathable 10K laminated polyester-matte fabric that's treated with DWR for maximum winter protection, the Turbine Boy's Mach Jacket is packed with warm insualtion and lined with micro fleece at the collar and the hood for cold-weather comfort. Fitted with critically taped seams to keep out the elements, the powder skirt, underarm venting, and snap-on hood guarantees greatness on all of their adventures.