STX Aria Pro-M Unstrung Head Step into the spotlight with the Aria Pro-M. Designed as an update to the Exult Pro, the Aria Pro-M was designed to push further and keep up on both sides of the ball. The head of choice for top-level middies at Johns Hopkins University, University of Florida, and Clemson, the STX Aria Pro-M features highly durable EnduraForm™ plastic, Speed Scoop™ for quick ground balls, and stringing holes that provide a variety of ways to create the perfect pocket.