Tourna Black Zone offers remarkable precision on full swings. This thinner gauge provides easier access to pace, a slightly softer feel, opens up the sweetspot a tad, but has slightly less durability compared to the 16 gauge version. With its slick surface, this string snaps back into place very effectively in order to impart more spin to the ball. Though it feels very crisp and quite firm, we found this string to have above average comfort for a poly-based offering. Players looking for a user friendly control string with great spin should love Black Zone.