ISOSPEED Professional Classic 17/1.20 String

ISOSPEED Professional Classic 17 has the same construction as ISOSPEED Control Classic 16. Unlike the majority of multifilament strings, which consist of nylon filaments, ISOSPEED Professional is constructed with polypropylene ribbons. The result is one of the most comfortable strings on the market. Through a unique patented system, this string is factory pre-stretched and locked under tension on an industry exclusive 40 foot reel (think tension maintenance). Recommended to any player who requires high levels of comfort.