Stone Island Nylon Tunnel Seamless Down VestA technical down vest crafted from single layer elastic nylon using a specialized weaving technique that creates seamless feather compartments directly on the loom for superior down retention. The piece dyed shell features PFC free anti drop treatment and is stuffed with premium RDS certified down that resists dye transfer. Practical details include a quilted stand collar, hidden zippered chest and side pockets, elastic armholes, and a two way zip