The NEW Professional is ISOSPEED's closest synthetic string to natural gut. ISOSPEED Power Ribbons are used for both the core and for the surface coating. The surface coating is heat-sealed for increased durability and is designed to allow the Power Ribbons to move freely within the core. A pre-stretched multifilament layer minimizes the loss of tension. The result is a soft, gut-like feel, excellent power and optimal arm protection.

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• Gauge: 17 / 1.20 mm
• Length: 40 feet / 12 m
• Construction: Power Ribbons are wound several layers thick so that they overlap and are diametrically opposed, thereby simulating the structure of a natural gut string. Pre-stretched multifilaments minimize the loss of tension.
• Color: Natural