I not only use one layer I use 3. Why not? Got to wear clothes and layers work well for me.The cost is really a none issue. All good clothes cost andI'm a good shopper. They are quality clothes with or without the scent elimination. If it's got it all the better andagain ya got'a wear clothes that keep you warm and dry and they do. There's no down side is there? The weave is so tight they block the cold winds well with a light fabric. That's a good thing isn't it?