Topspin Cyber Blue 17/1.25 String — image 1
Alpha CPOW17

Topspin Cyber Blue 17/1.25 String

Line: Topspin Cyber Blue

$8.49

Reference price as of June 2026 Not a live offer

Offers the same great control and durability as Topspin Cyber Flash string but with a softer and more dampened feel. Topspin Cyber Blue (formerly called Cyber Power) offers improved tension maintenance and added comfort over many competing co-polyester strings. The thin 17 gauge offers lots of bite and a livelier feel compared to the 16-gauge version.

String specs

Gauge 17/1.25mm
Length 40ft/12m
Composition Polyester
Color Ice Blue

Where to buy

What players say

Liked 2 sources

Dozens of Tennis Warehouse customer reviews of this 17-gauge Cyber Blue set, spanning nearly two decades of use, describe it as one of the softer, more arm-friendly polyesters on the market with very strong tension retention. Most reviewers report good control, solid spin, and a comfortable feel close to synthetic gut, though a minority find it too dead or muted and a few report durability or arm-soreness issues.

Best for

  • Players wanting a soft, arm-friendly poly instead of a stiff co-poly
  • Topspin baseliners who prioritize control and comfort over raw pace
  • Players prone to arm or elbow soreness from firmer polyesters
  • Hybrid setups paired with natural gut or another poly on the mains

Pros

  • Repeatedly described as one of the softest, most arm-friendly polys available
  • Strong tension maintenance that many reviewers single out over multiple restrings
  • Good control and solid topspin bite for most players, with several comparing the feel to synthetic gut
  • Several long-time users report little to no elbow discomfort, even switching to it specifically for arm relief

Cons

  • Some players find the feel too muted or dead, lacking the crisp pop of firmer co-polys
  • A few reviewers report it loses tension and durability faster than expected, breaking down within a couple months
  • At least one reviewer reported elbow and shoulder soreness despite its soft reputation
  • Spin potential felt below typical poly expectations to a couple of players

Voices

softest poly string with excellent tension stability with some power and feel. I hybrid this on my mains

— Jake, Tennis Warehouse customer review, Web

Very soft and arm friendly. Spin amount is average. This plays similar to Babolat Pro Hurricane

— RBC, Tennis Warehouse customer review, Web

very soft, yet powerful, with so much feel...tennis elbow doesn't flare up anymore

— Jeff, Tennis Warehouse customer review (Sydney), Web

excellent control and spin, crisp feel, descent power and arm friendly...playability is incredible!

— Anakin, Tennis Warehouse customer review (San Francisco), Web

okay...NOT durable and they lose tension quickly...lasted about 2-3 months

— Robin, Tennis Warehouse customer review (Norway), Web

had a hard time with my slice...elbow and shoulder soreness...would not recommend

— B-UNIT, Tennis Warehouse customer review (Chula, CA), Web

Sources

Know what players think before you buy

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