Tecnifibre NRG-2 18g Natural

Tecnifibre NRG-2 18g Tennis String Natural* The NRG² was designed with a special purpose in mind: to be the engine of the racket! A specific construction of more than 1200 microfilaments made of Elastyl (12% more elastic than standard polyamide). Impregnated with 400 polyurethane to generate power and comfort. NRG features the exclusive S.P.L surface treatment to provide slip and effective snap back so you don't have to re-string during play.