Luxilon introduces a softer version of 4G. Like the original version, 4G Soft offers remarkable tension maintenance, scoring well above average in our Tennis Warehouse University String Lab. Although it is softer than the original 4G, this string is still firm and best suited to intermediate and advanced players who make their own power. The exceptional control on full swings lends itself to fast swing speeds and very easy access to spin. This is a great option for big hitters who want control, spin and durability along with increased tension maintenance