FITTED: NEXT-TO-SKIN WITHOUT THE SQUEEZE. UPDATED BRUSHBACK KNIT FABRIC MAXIMIZES COMFORT, BREATHABILITY & MAINTAINS WARMTH MATERIAL WICKS SWEAT & DRIES REALLY FAST 4-WAY STRETCH CONSTRUCTION MOVES BETTER IN EVERY DIRECTION ANTI-ODOR TECHNOLOGY PREVENTS THE GROWTH OF ODOR-CAUSING MICROBES SMOOTH FLATLOCK SEAMS PREVENT CHAFING FITTED SILHOUETTE GIVES A MORE SUPPORTIVE, FEMININE FEEL 87% POLYESTER/13% ELASTANE IMPORTED. COMPLIES WITH PROP 65.