Under Armour Women's Power 75.8% Nylon/24.2% Elastane UA Power In Pink is donating $10 million to Johns Hopkins Kimmel Cancer Center to benefit breast health, innovation & education Updated alpha sizing! New super-soft stretch fabric delivers excellent all-day comfort for any activity Laser cut edges offer a hem-free construction for a smoother, more flattering silhouette 4-way stretch construction moves better in every direction