The performance of single-core multi-layer fiber tennis wire is similar to that of single-core single-layer fiber tennis wire, but its durability and ball eating performance are better.

Multi-fiber tennis string is a bundle of extremely fine synthetic fibers twisted together to form a string, and its structure is similar to natural gut string. The multi-strand structure of nylon is superior to the structure with inner core in terms of comfort of shock absorption when hitting the ball, and the ball feeling is similar to natural gut string. At the same time, because this kind of string is soft and comfortable when hitting, it is more suitable for players who have tennis elbow but can't afford natural gut string. However, like the natural gut string, this kind of string will cause damage to it when hitting the ball, and may also cause the tennis line to bifurcate, so its service life is between the natural gut string and the cored composite string.