Gore Running Wear Men's Flash Thermo Tights 88% NYLON,12% ELASTANE,; Do not bleach. Do not tumble dry. Dry or steam iron low. Drycleaning any solvent except trichloroethylene. Thermoregulation Zip pocket on back; Contrast flat-lock seams; Zipper with semi-lock slider and reflective print on lateral hem Adjustable elastic waistband with flat cord CHN