D.S) technology. The Hot Metal face is designed to be thin yet strong, helping to bring up your ball speed. The U.D.S. technology helps with consistency by increasing stability on both its vertical and horizontal axis. This means that shots from anywhere on the face, even outside the sweet area, will maintain the speed needed to get the ball where you want it to go. The Mizuno JPX-800 FW's weighted stainless steel body with ultra-thin crown delivers a low and deep center of gravity, which makes for an easy launch.