Introducing HEAD Microgel 125 Squash Racquet – Rock-solid feel and touch, With the lowest density of any material, HEAD Microgel is a revolutionary new silicone-based material. HEAD has combined Microgel with stiff and strong carbon composite fibers to create a racquet with incredible responsive qualities. On ball impact, Microgel uniformly distributes the impact load around the frame to provide the most rock-solid feel and superior touch ever achieved in the game.