Thomas Cook Mens Mallard VestThe Thomas Cook Dux Back range is all about the outdoors. So, if you're looking for something that's heavyweight but versatile enough to wear in the paddock, in the yards or around the campfire, this is the vest for you. Heavy weight wool blend thermal Polar fleece lining for extra warmth Wind resistant Abrasion resistant Storm flap with concealed zip closure and metal snaps Easy snap construction for easy closure 50% Wool, 50% Polyester Brown Black