these socks are always a great buy, they last a long time and stay soft and comfortable for months of daily use. the no show socks have a lower cut then normal socks which is great for summer tennis shoes, and they come right to the ankle. they are super comfortable and have a slight stretch to them, that contains lycra spandex. they are mostly cotton, but contain polyester, and they are very soft to touch. they have an odor control, probably something to do with the material used in making it, but the package does not state how they are odor control. Made in the U.S.A. and the grey toe and heel parts are for added cushion when you walk, or stand. you get six pairs for size shoe six to twelve. my husband likes this type of sock better than any other style, he wears socks all the time, at the job all day where he is always on his feet, even at home. oddly enough, when we do buy more of these socks it's because they get a small hole in them, and that's after months of wear, but they always get holes in the same locations, either the grey of the toe or grey of the heel. but we'll see how long these last, over all these will always be my go to socks for they're durability and comfort.