Hot Chillys Women's Contour Ankle Petite Tight 52% Bio-Silver Nylon/ 40% Bi-constituent Fiber/ 8% Spandex Made in the USA and Imported An intimate blend of MTF Bio-Sliver nylon, MTF Bio-Carbon polyester and spandex Body Fit for ultimate warmth Low rise Engineered knee break with ventilation Double layer dobby knit at waistband to ensure a secure fit