The Acerbis X-Grip Frame Guard serves a dual purpose. First, it allows the rider to protect the frame from wear and tear on the bike. As a show frame, the bike stays in better condition for longer. But the genius of the Acerbis X-Grip Frame Guard comes in adding a second purpose: grip. That's right; not only does the X-Grip serve as an excellent frame protector, but it also makes it easier for a rider to hold on to the bike. As the name suggests, it's a frame protector that adds more grip for the rider. The Acerbis X-Grip Frame Guard is manufactured from a double injection mold, and that's where the key lies. The exterior is made of durable polycarbonate plastic, which is what allows it to serve as an excellent frame protector. Meanwhile, the plastic interior is much more flexible (though still durable), and this is the piece that offers the incredible grip. Together, they create a frame protector that will make both bike and rider happy.