Tennis Racket Restring 

Polyester strings show a fairly simple structure: they consist of a single polyester fiber with a thin coating. This type of construction is termed “monofilament”. They come in different gauges (1.10-1.35mm) which enables you to choose among different elasticity/durability levels.

Polyester strings have little elasticity and feel quite stiff compared to synthetic or multifilament strings, but on the other hand they provide significantly better durability, allowing for thinner gauges. Pure polyester strings like the one main downside: They tend to lose their tension quite quickly, so control decreases and the string feels dead after a short time of play. Thus polyester strings are only recommendable for players with high string consumption. For these players, polyester strings offer a great price/performance ratio.

During the past few years, tremendous effort has been put into the advancement of monofilament strings and the elimination of their major weaknesses (tension loss and lack of elasticity).

Due to its more durable construction, polyester can be quite hard on a player’s arm. As a result, it’s not typically a string that would be recommended to players fighting an arm injury.

Polyester strings though do have some popularity with players who frequently break strings. However, even in this case, polyester strings are typically combined with natural gut or nylon strings to provide players with durability while maintaining a more soft, natural feel. (Hybrid Stringing)

Multifilaments are woven together from thousands of microfibres into a string.... In general, they come in two catagories, which can be labelled as, 'standard' and 'premium'.  The main difference between the two categories is the number of strands the string contains, which changes the characteristics. More expensive multifilaments , 'premium' , are much softer and therefore more comfortable. They are also engineered to be slightly more control oriented, allowing for better feel of the ball.

Multifilament strings are suitable for amateur, club and even county level players due to their excellent levels of softness, power and pricePlayers often choose to string them in a hybrid or simply, as a full bed for the ultimate experience in power and comfort.

Multifilament : A little more durable than nylon, better feel than nylon or poly, spin NOT as good as poly.  Easy on the ARM.

Ideal for beginners, and some intermediate players,  it is cheaper than most other types of strings and synthetic gut is a good material to avoid tennis elbow.  On the lower end of the performance spectrum, synthetic gut tennis strings provide players with access to a quality product without the higher price tag ... 

they performs reasonably well all around without the enhanced features associated with other types, i.e., the extra comfort available through many multifilaments or control familiar with polyester.

If anything, synthetic gut strings will tend to err on the side of durability, which is a great feature for players looking for an affordable option because they’ll also last, which adds to their value.