Babolat Tonic+ Longevity BT7 15L tennis string is ideal for the player that wants power and comfort. This natural gut string is durable and will last much longer than others. Best for non-string breakers. Recommended tension range: 1.35/15L: 24 kg/53 lbs – 32 kg/70 lbs..
Holabird Sports is a family-owned and operated running and racquet sports specialty company located just 20 minutes from Baltimore’s Inner Harbor! They are local sports enthusiasts, runners, tennis players of all levels, trained teaching pros, Master Racquet Technicians, Senior Olympians, collegiate athletes, marathoners, squash and racquetball players, and so much more.