Zoot Sports Unisex Adult Crx Active Run Short polypropylene 2.75" high 6.5" wide 70% Polypropylene 30% Spandex ZoneRx - Muscle specific zones of compression stabilize the hamstring and quadriceps and reduce muscle damage Machine wash cold, Gentle cycle, No softeners, Dry Flat, Do not bleach, Do not dryclean CRx - Graduated compression from the knee to the waist that helps remove lactic acid improve blood circulation back to the heart; SynchroRx Polypropylene and Silver tech provide moisture wicking 99.9% antimicrobial protection keeping the lower body dry and cool; Dynamic X Proprioception panel provides superior pelvic support and body positioning