The men’s MACAI by Arc'teryx is a ski industry legend and the warmest down-insulated jacket in the Whiteline Collection. It features a supple yet entirely waterproof N40p-X 3L GORE-TEX shell, which is windproof yet highly breathable. 750 fill European Goose Down pads the core and arms, providing immensely breathable warmth. Synthetic Coreloft insulation is strategically placed in areas prone to moisture accumulation. Down Contour Construction places compact Coreloft fill within the GORE-TEX shell, sealing out cold air while you're snowboarding or traversing the frigid sidewalks of Whistler. The removable, insulated DropHood fits over your helmets and rotates with your head.