Featuring a unique construction, Head FXP Tour Liquid Blue 16 combines polyester filaments and microfibers for a creative combination of crisp and comfort. The core of the string is made up of four polyester fibers which are surrounded by much softer multifilament packets. This gives FXP Tour an interesting soft feel at impact, while remaining firm for excellent control. The elastic properties of the multifilaments in the string provide a nice amount of power, making this a solid string for all court players seeking feel and precision with some extra depth. Our testers mostly enjoyed this string, appreciating the directional control without feeling stiff.