PREMIUM COTTON - Made of natural combed cotton & spandex which enhances durability, comfortability and sweat-wicking, these women no show socks are ideal for indoor and outdoor activity NOT SLIDE DOWN - Cotton low cut invisible socks with 3 silicone heel grip technology ensures non-slip and your loafer socks stay put all day long TWO SIZES AVAILABLE - Our no show women socks for flats fit US women's shoe sizes 5-8, US women's shoe sizes 8.5-11 INVISIBLE WEAR - The liner socks with basic colors creates an invisible wear inside shoes. Developed with practicality, comfort, safety, and durability in mind, our unique No Show Socks for women provides moisture- management and comfort without sacrificing fit. Keep your socks low profile, invisible and almost non-existent as you wear your favorite shoes, giving your footwear a unique look. Moisture wicking keeping feet clean, dry. Comfortable fabrics Long fiber cotton knitting technology make socks light and ventilation,your feet can breath well when doing sports or walking. Not only does this grip hold the socks, it is also made out of soft gel that does not cause any discomfort on your heel. Arch Support Design Excellent and flexible elastic in the arch area for support, perfect fit feet, use 200-pin high knitting technology to make socks softer and more durable. Strong Elasticity Cotton fiber has super-elasticity and can be stretched freely, so that the socks fit perfectly on the feet.