CW-X Women's Insulator Pro Tight Running Pants Polyester 80% / Spandex 20% Imported 80% Nylon, 20% Lycra - 2-way stretch Support Web; 80% Coolmax, 20% Lycra - 4-way stretch body fabric; Machine wash warm with like colors. Line dry in shade, do not tumble dry. Do not bleach. Do not iron. Do not dry clean. WarmStretch temperature-regulation fabric. Support Web for Targeted Support Flat seam construction eliminates abrasion, increases comfort and enhances fit. Thailand