Zoot Sports Men's Ultra 2.0 CRX Shorts 70% polyester/30% spandex with SilverTECH Imported CRx = improved blood circulation^BIOwrap = targeted muscle stabilization^18-30mmHg compression level 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|