The Obermeyer Siren Jacket is made with HydroBlock Pro 100% Polyester Stretch. The Siren Jacket offers a removable hood with drawcord adjustment and wrist pockets. HydroBlock Pro 100% Polyester Stretch Removable hood with drawcord adjustment Extra soft fleece-lined collar Stretch inner thumbhole cuffs Wrist pocket Interior zip stash pocket Adjustable interior hem drawcord Tricot-lined handwarmer pocketsObermeyer