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Density (measured by the number of needles per square meter) and Dtex (grams per 10,000 meters of fiber) are the unsung heroes of durability.

• Dtex: This measures the linear mass density of the fiber. A higher Dtex number (e.g., 11,000 or higher) indicates a thicker, heavier, and more resilient blade capable of resisting the aggressive shearing forces discussed earlier.
• Gauge: This refers to the distance between stitch rows in the tufting process. A narrower gauge (e.g., 3/8 inch) allows for more stitch rows per linear meter, directly contributing to higher total stitch density.

A futsal football field that only relies on a soft feel and does not have enough fiber weight will soon level off. Low yarn Dtex combined with insufficient stitch density leads to rapid fibrillation, and the fibers split at the tip, resulting in a vague and slow surface.