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Yonex

Poly Tour Air 16L

Polyester Gauge 16L 1.28 mm In production

Lab measurements for Yonex Poly Tour Air 16L, ranked against all 789 strings in the database. Every figure below is a testing-machine result at a fixed reference tension, not a playtest opinion.

Measured values

Stiffness

155lb/in

lower = softer, kinder on the arm

Tension loss

41%

lower = stays where you strung it

Energy return

88%

higher = livelier, more free power

Spin potential

4.2

higher = more spin off the string bed

Ball bite

0.457COF

higher = grabs the ball harder

Snapback

0.108COF

lower = strings slide and snap back

How it ranks against all 789 strings

Stiffness 155 lb/in · 18th pct

Stiffer than 18% of strings tested.

Tension loss 41 % · 69th pct

Sheds more tension than 69% of strings tested.

Energy return 88 % · 46th pct

Livelier than 46% of strings tested.

Spin potential 4.2 · 35th pct

More spin potential than 35% of strings tested.

Ball bite 0.457 COF · 60th pct

Grips the ball harder than 60% of strings tested.

Snapback 0.108 COF · 73rd pct

More string-on-string friction than 73% of strings tested.

Strings that play like this

Closest matches across stiffness, tension loss, energy return and spin potential.

Ashaway MonoGut ZX 16 89% match Gosen Sidewinder 16 (1.31) 88% match Wilson Hollow Core Pro 17 88% match Gosen TecGut Remplir 16 86% match Wilson Hollow Core 16 86% match Tecnifibre Pro Mix 17 86% match

More from Yonex

What these numbers mean

Stiffness · lb/in

How much the string bed resists deflection. Higher plays firmer and more controlled; lower plays softer and easier on the arm.

Tension loss · %

Share of the reference tension the string sheds under a fixed test protocol. Lower means the bed stays where you strung it for longer.

Energy return · %

Share of impact energy handed back to the ball. Higher plays livelier and more powerful.

Spin potential

Ball friction divided by string-on-string friction. Higher means better bite with a cleaner snapback, so more spin.

Ball bite · COF

String-on-ball friction. Higher grabs the ball harder through the brush.

Snapback · COF

String-on-string friction. Lower lets the mains slide and snap back into place after impact.

Compare Poly Tour Air 16L against 789 strings Find the right string for me