Reebok Womens Activchill Graphic Slim Fit Tank Top Polyester-Elastane Made with 91% polyester/9% elastane fabric for stretch and comfort and Speedwick technology to wick away sweat Cool to the touch ACTIVChill mesh on the back for heat and moisture control while a UV 50+ treatment provides sun protection Higher neck for coverage A-line silhouette and dropped arm holes for mobility