Yonex Poly Tour Pro 125 (16L/1.25) tennis string set product photo
Product image: Yonex

String

Yonex Poly Tour Pro 1.25 (16L)

The softer round co-poly club players reach for when ALU Power feels too firm—low-powered control, above-average poly comfort, and honest spin without a shaped profile.

Yonex$23

Court Score

3/ 5

Demo this as a primary option in its lane? Not an average of the axes.How we score.

Powerfree depth
3
Controlaim when swinging out
4
Spinshape / dip
3
Comfortarm-friendly sessions
4
Valueworth street price
3

What it is

You take a full cut on a heavy ball and the bed sinks a touch—plush for a poly, then a quiet, controlled leave—not the metallic ping of a stiff silver string. That’s Yonex Poly Tour Pro 1.25: the round co-poly Yonex pitches as soft and all-around, and the volume gauge Tennis Warehouse still pushes hardest.

US retail naming (Sep 2026): Tennis Warehouse titles the set Yonex POLYTOUR PRO 16L/1.25 String; Yonex USA sells POLYTOUR PRO 125 - SET (SKU PTGP125). Same diameter either way—16L / 1.25 mm. Composition per TW / Yonex: co-polyester monofilament, round profile, Silicone Oil Infused Filament (SIF) technology. Set length 39 ft / 12 m. Colors on TW: Flash Yellow, Graphite (black), Blue, Purple (Midnight Purple on Yonex USA). Made in Japan. US street for a set: $23.00 (TW and Yonex USA). Reel if you string a lot: 200 m / ~$290 on Yonex USA (PTP125-2). Family also ships 1.15 / 1.20 / 1.30.

Not Poly Tour Strike, Spin, Rev, Air, or Fire—this listing is the classic round Poly Tour Pro, focused on the 1.25 set most TW shoppers actually buy.

Who it’s for

Serious recreational and club players (roughly 4.0+) with medium-to-full swings who already generate pace and want a softer round full bed than Luxilon ALU Power. Baseliners who value directional control and pocketing more than octagon bite. Strong fit in stiff or lively frames (EZONE 98, Pure Drive, open-pattern 100s) when you want to swing out without the firm silver sting. Also a natural hybrid cross when a shaped main (Poly Tour Spin / Strike, Hyper-G-class) needs a slick, softer partner.

Skip it if you need maximum shaped snapback (RPM Blast / Hyper-G on Court List), want the crisp connected “tour silver” feel of ALU Power, or are brand-new to poly with a short swing—TW’s own playtest still flags it as too firm for beginners and low-powered. Also skip if $23/set feels steep for how often you’ll restring; cheaper co-polys exist. Comfort seekers with real arm issues should still consider multi/gut or a hybrid—not a promise that any full-bed poly is arm-proof.

Standout details

  • Specs that matter: 16L / 1.25 mm (also 1.15, 1.20, 1.30) · 39 ft / 12 m set · round co-poly · SIF · Yellow / Graphite / Blue / Purple · Made in Japan
  • Softer than the silver benchmark: TW University stiffness ~181 (Yellow 16L/1.25) vs ALU Power 125/16L at ~209—lab numbers that match the “softer round alt” lane
  • Control first, power second: TW playtest Control 86 / Power 45 / Overall 84—low trampoline; you supply the engine, the string keeps depth honest
  • Spin without a shape: TW Spin 79—usable snapback for a round mono when you bring racquet-head speed; shaped beds (RPM / Hyper-G) still grab more
  • Comfort is the pitch: TW Comfort 72—above average for a poly; playtesters called it soft/dead pocketing vs older board-like monos. Still a monofilament—arm-sensitive short swings will notice
  • Pricing ladder: Set $23; 200 m reel ~$290—street sits next to ALU ($21.50) and RPM ($22); value improves if you string yourself
  • Tradeoffs: Peak playability window is finite (customer reviews often cite ~10–15 hours before the bed goes mushy); not free power; not shaped bite; $23 is premium-tier for a set

Who’s hitting it

Yonex’s POLYTOUR PRO athlete row publicly associates the family with Casper Ruud, Ben Shelton, Frances Tiafoe, Jaume Munar, Nick Kyrgios, Naomi Osaka, Belinda Bencic, and others. Treat that as brand-family association—not a claim each runs a retail full bed of 1.25 Flash Yellow at your local stringer’s tension.

Independent stringing reports (Tennisnerd and tournament log write-ups) are more specific: Nick Kyrgios has been logged on a full bed of Poly Tour Pro around ~48 lbs; Casper Ruud has used Poly Tour Spin mains / Poly Tour Pro crosses (often 1.25 around ~54 lbs); Ben Shelton has been reported on Poly Tour Strike mains / Poly Tour Pro crosses (tensions in the mid-50s, gauges not always the retail 1.25 set). Those are hybrids and custom tensions—retail ≠ tour setup.

History, not hype: Poly Tour Pro is Yonex’s long-running soft round co-poly, pre-stretched at high temperature for tension hold (Yonex / TW copy), with SIF oil infusion for snapback. Pros cut out beds constantly. Why club players still care: if ALU Power’s firm connected feel is a bit much, this is the softer round reference bed to demo—not a promise your EZONE will play like Shelton’s hybrid stick.

Honest verdict

If Court List already covers Luxilon ALU Power 125, Solinco Hyper-G, and Babolat RPM Blast, Poly Tour Pro 1.25 fills the softer round co-poly slot: less stiff than ALU in the lab, less bite than the shaped pair, more pocketing than the silver string for many club arms. String it a couple of pounds lower than a multi if you’re coming from soft string—or a touch tighter than your usual firm poly if the bed feels too muted—take full cuts, and cut it out when the quiet control window closes. It’s not free power, not shaped spin, and not cheap—for serious recreational players who want round control without ALU’s firmness, it’s the Yonex set that makes sense.

Updated 2026-09-23