Under Armour Women's Power In Pink Will Over Noise Short Sleeve 55% Cotton/34% Polyester/11% Rayon Imported Part of our UA Power In Pink Collection UA Power In Pink is donating $10 million to Johns Hopkins Kimmel Cancer Center to benefit breast health, innovation, & education. UA Charged Cotton tri-blend has a soft, athletic feel for superior comfort & performance Signature Moisture Transport System wicks sweat so it dries faster than ordinary cotton Lightweight stretch construction improves mobility for full range of motion