The Yonex Ezone 105 7th Gen Tennis Racquet gets a new, thicker shaft for improved stability. The convex design helps reduce torque on off center hits for greater power. The 7th generation EZONE adds 2G-NAMD graphite for faster ball speed without sacrificing comfort. Vibration Dampening Mesh (VDM) in the handle filters out unwanted vibrations without overly muting the response.