This is the original sock that started the whole 360 degree sock craze. This sock is constructed of 96% polyester and 4% spandex. It has a very smooth comfortable texture, The top 1" cuff is black and designed and woven to keep the sock from ever sliding down the leg. This sock is all white except for the black reinforced toe, heel and top cuff area that can help to reduce wear and tear in those regions of the sock.