The Worlds Softest Weekend Ragg Crew Nightfall is a flawless and comfort-based sock for all of your weekend adventures. The women's sock by World's SoftestÂ® incorporates color and texture to create the look of a hand-knit sock while maintaining its feel. The crew socks feature an ultra-soft knit feel for comfort. It includes ribbed leg, flat knit foot, and space dye patterns. It comprises 98% polyester and 2% spandex.