Ingeniously designed, this soft and stretchy set stays hidden for effortless wear. Hidden soft non - slip grip at inside heel., Imported:, Fabrication: 75% Polyester 21 Cotton 4 Spandex, Garment Care: Machine Washable Loft Ballet Flat No Show Sock Set Black Women's by Loft Size Regular - One Size Black Women's Socks, & Tights 75% Polyester 21% Cotton 4% Spandex, Machine Washable