Luxilon 4G Soft Tennis String4G Soft emphasizes improved playability and comfort without sacrificing the first rate tension maintenance of the 4G line. While it is over 10% softer than 4G, this string still maintains solid firmness and durability. The entire composition of this string was designed to help players reach the next level, where it's molecular chains are strategically aligned to minimize tension loss over time and it's poly ether ether materials enhance strength and