Built tough with Polyfibre exclusive Fiber Fusion Technology (FFT). Sensicore M8 is constructed with multifilament core strands which provide excellent response and resiliency; its tough braided outer layer adds additional ball control, repulsion power, and extends string life.  Finally, a layer of titanium additive finishing evolved into an abrasion-resistant polymer resin creates a nice, clear hitting sound.  Recommended for all-around play.