Zarlon strings pass a high quality control throughout their manufacturing before distributing it.
All Zarlon strings are subjected to a pre-stretch during their manufacture, this makes each model different and maintains its elasticity for an long time of play.
Co-polyester has the property of deforming at the crossings of the strings, they do not move with each other, so they break less by friction and give the same
stability in each time you hit of the ball.
Polyester is stiff and and bite the ball quite a bit, this makes you feel the control.