Topspin Cyber Flash String 17L/1.20 — image 1
Alpha TCF17L

Topspin Cyber Flash String 17L/1.20

Line: Flash

$7.49

Reference price as of June 2026 Not a live offer

Topspin Cyber Flash is one of the most playable and comfortable co-polys available. Offering exceptional spin, this lively co-poly allows big hitters to hit a very heavy ball. As with most firm monofilaments, this one offers impressive durability. Given its softer feel and high level of playability, Cyber Flash is not just for advanced string-breakers. It's also a great option for fast swinging intermediates looking to transition into a poly.

String specs

Gauge 17L/1.20mm
Length 40ft/12m
Composition Co-polyester monofilament
Color Grey

Where to buy

What players say

Liked 2 sources

Tennis Warehouse playtesters and customer reviewers describe this thin 17L-gauge Cyber Flash as an unusually soft and lively polyester, with strong control and spin access and better comfort than most competing co-polys. Power is low by design, and reviewers who want extra bite from the string surface suggest a shaped alternative, but most found it a comfortable, durable, and affordable poly for players moving away from softer multifilaments.

Best for

  • Players wanting a thin, soft-feeling poly for extra comfort
  • Intermediates moving into polyester for the first time
  • Players who want strong spin and control without a shaped/textured string
  • Value-conscious players stringing often

Pros

  • Soft, lively, comfortable feel that stands out for a polyester
  • Strong spin access on forehands and slice off the backhand and serve
  • High control rated by both Tennis Warehouse playtesters (7-8/10)
  • Good durability and playability duration for a thin 17L gauge
  • Seen as affordable value, especially by the reel

Cons

  • Power is rated low (5.8-6/10 by playtesters), so it won't suit players wanting free pace
  • Round profile gives less spin bite than shaped strings, per one playtester's personal preference
  • Still a polyester, so comfort and playability fade with hours of use

Voices

It's soft and lively, so in turn that makes it extremely comfortable... So comfortable for a polyester string!

— Andy, Tennis Warehouse playtest team, Web

Love the crisp, lively feel, and it's great value.

— Andy, Tennis Warehouse playtest team, Web

I was rewarded with easy access to extreme spin on the forehand side and copious amounts of slice off the backhand wing and on my serve.

— Mark, Tennis Warehouse playtest team, Web

A high level of comfort, access to spin, affordability and control.

— Mark, Tennis Warehouse playtest team, Web

This thin gauge is the best of the lot. Comfortable, long lasting and gives me the control I like.

— Sean (FL), customer review, Web

Been loving this super soft, round copoly for a few years now for its overall performance and price point.

— Andrew (CA), customer review, Web

Sources

Know what players think before you buy

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