The plain socks " Haku Haku Thin Cotton Linen" are knitted using a blend of 70% cotton, 15% linen, and 15% ramie. New colors, mist white, ginger, and scarlet, have been added to the lineup. The cotton is mixed with 30% linen, giving them a unique crisp feel and breathability, making them refreshing to wear. They are thin enough to be worn with pumps, but the special backing thread (elastic thread) allows the backing thread to penetrate into the middle layer of the socks (where it does not directly touch the skin), allowing you to feel the original comfort of the material. They can be worn alone or layered over five fingers. For more information, please see the product page on the Online store.