I have been reading some discusions about synthetics, mostly cotton/nylon blends. Has anyone ever had any experience with other synthetics like cotton/polyester blends, or 100% polyester? How about 100% nylon, 100% acrylic. Am I not seeing any disscusion on these because they are not worth disscusing? There is a product called Polar Fleece. It is 100% polyester fleece (whatever that is) and it is very warm, at least when it is dry. I am not sure how it preforms when wet though.