The material is soft and breathable.These socks keep my feet from getting sweaty & stinky, while being completely no show. Socks for flats have a three silicone non-slip grip of adhesive towards the heel to keep low cut socks in place. These womens socks no show do show with pumps, heels and flats.Womens no show socks would only work for athletic shoes. Wear no show socks women for flats with boots that show the ankle or loafers and the dock does not show. Womens no show socks adjust to your foot size due to the stretching capabilities.The anti-slip silicone will hold up after multiple washings.Our no show socks women fit US women’s shoe sizes 6-11.