Iso Speed Energetic Plus - tennis string

The newer version of the "Energetic Plus" tennis string offers greater flexibility. The X Core and Reflex systems ensure maximum ball control and minimum loss of tension. Already in the production phase, the individual elements of a tennis string are differentially pre-tensioned and thus receive additional energy. Later this energy prevents the unpleasant loss of elasticity in the tension.
Rough surface allows you to play with more spin.