Zoot Sports Women's Ultra 2.0 CRX Shorts 70% polyester/30% spandex with SilverTECH Imported SilverTECH= 99.9% Antimicrobial Protection NEW Lighter weight advanced polyester transports moisture away from the body to the garments surface, spreading quickly and drying faste CRx = improved blood circulation BIOwrap = targeted muscle stabilization 18-30mmHg compression level