Designed to be invisible flats socks, it gives a sockless appearance after wearing with shoes. Wearing our ultra low cut liners with your different shoes, it's comfortable,elegant with good practicality. And these black, beige and gray colored socks are perfect for your most favourite shoes, flats, high heels, dance and sports shoes and canvas shoes, etc. Non-slip design - With the silicone pad at the sock's back heel, to avoid slipping off even long time walking. Made of premium fabric - soft,breathable,durable.