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How to choose the string for your racquet

The four string types that exist, who each one is for, and why the setup your favorite player uses is probably wrong for you.

By Francisco De Jesús · Tennis Pro, FDJ Tennis Academy · updated 2026-09-06

String is the only part of your racquet that touches the ball. Changing it changes your game more than changing frames, at a fraction of the cost.

The four types

TypeStrong atWeak atWho it is for
Natural gutComfort, power, feelPrice, hates humidityPlayers who can afford it and protect the arm
MultifilamentComfort, powerFrays quicklyPlayers with elbow or arm trouble
Nylon or synthetic gutPrice, balance, durabilityExcels at nothingBeginners and recreational players
Polyester or co-polyControl, spin, durabilityHarsh on the arm, dies fastBig hitters who break strings

Start from the problem you have

Why you should not copy the pros

Many tour players use a hybrid: polyester in the mains for control and spin, natural gut in the crosses for feel. It is an expensive setup, swapped every few matches, built for someone accelerating the racquet at speeds a club player never reaches.

Put the same setup in the hands of someone playing twice a week and it feels dead and punishes the arm. The right string is the one that suits your game, not the one on television.

Gauge matters too

Gauge is the thickness of the string, usually between 1.15 and 1.35 mm. Thinner bites the ball better, gives more spin and feels better, but breaks sooner. Thicker lasts longer and is more forgiving, but feels muted.

If you do not know where to start, sit in the middle around 1.25 mm and move from there.

Hybrid: best of both

A hybrid puts two different strings in the same racquet. The common setup uses polyester in the mains, which do the spin work and break first, and something softer in the crosses so you do not lose all the comfort. It is a reasonable way out if you want polyester's control but your arm is charging you for it.

See the strings we carry

Read next: what tension to use and how often to restring.