MpingT Women's No-Show Invisible Silk Sock Liners (Pack of 4) Material: 90% Terylene 5% Spandex Silk Sock Liners: Ice silk cover + Cotton Botton Size: one size fits all Includes 4 pairs: 2 black, 2 beige Non-skid design silk sock liners: silicone grip patches at bottom and heel for better traction