Yonex · Current range

Yonex REXIS COMFORT

TWU’s REXIS COMFORT 1.25 mm sample records 128.6 lb/in stiffness, 24.0% tension loss and a 6.4 spin-potential ratio. Comparing the same gauge of REXIS SPEED reveals distinctions the product names alone cannot explain.

MultifilamentNot published by the manufacturer1.25 / 1.3 mm

Product details

Material: Multifilament
Gauge: 1.25 / 1.3 mm
Construction: multifilament
String cross-section: Not published by the manufacturer
Surface features: Not published by the manufacturer
Surface treatment / coating: Not published by the manufacturer
Product status: Current range
Stock status: Stock not verified

Laboratory measurements

Lower stiffness means less resistance to deformation in this test. Tension loss is measured under a laboratory protocol, not a prediction of playing hours. Spin potential is a friction-based ratio, not ball RPM.

Tennis Warehouse University · 2026-09-08
Tested sample	Stiffness lb/in	Tension loss %	Spin potential ratio
Yonex Rexis Comfort 16L (1.25)Test conditions: 51 lb · Fast (TWU)	128.6	24	6.4

The test tension is not a stringing recommendation. Compare the same gauge and test conditions; the racquet, stroke and stringing method also affect the result on court. On the source page, select All in the material filter to see results for every material.

Tennis Warehouse University ↗

Compare samples tested under the same conditions

Up to three products with nearby measured stiffness, matching diameter, material and test conditions. This is a data comparison, not a ranking of suitability.

1.25 mm · 51 lb · Fast (TWU)
Tested sample	Stiffness lb/in	Tension loss %	Spin potential ratio
Yonex Rexis Comfort 16L (1.25)	128.6	24	6.4
Yonex Rexis Speed 16L (1.25)	125.7	29.1	5.6
Head Reflex MLT 17 (1.25)	141.2	19.4	4.7
Head Velocity MLT 17 (1.25)	153.2	14.7	5.5

COMFORT does not automatically mean the lowest stiffness

At 51 lb and Fast speed, SPEED 1.25 measures 125.7 lb/in and COMFORT 128.6 lb/in—a difference of only 2.9 lb/in. No repeatability interval is supplied here, so this small difference cannot establish which feels more comfortable.

Tension losses are 24.0% for COMFORT and 29.1% for SPEED, a 5.1 percentage-point difference. Low initial stiffness and limited tension change remain separate questions.

What to take from the construction description

Yonex’s linked 1.25 mm page specifies nylon multifilament and FORTIMO. FRF and PLASMA BONDING appear among the technologies, but those names do not quantify playing speed or service life.

Do not copy construction details between the two REXIS models. SPEED’s page also specifies polyester. Products within the multifilament category can still differ in their constituent materials.

The shots to compare when moving from polyester

Include a short defensive return and a low ball as well as a full attacking swing. Whether you need easier depth or less variation in length changes the test you should prioritise.

Large simultaneous changes in material and reference tension make the result difficult to explain. Equal machine settings do not match completed stiffness when the material changes.

TWU · String stiffness ↗

Watch different kinds of multifilament wear

Separate surface fraying from notches at main–cross intersections. Fraying cannot establish the remaining number of hours, while remaining unbroken does not guarantee unchanged friction and response.

For hybrids, record the partner’s surface and placement. COMFORT’s low single-string stiffness is one part of the setup, not a direct description of the entire mixed stringbed.