Experience serious comfort and a near gutlike performance when you play with the Wilson NXT Power 16 tennis racket string set in Natural, with great allaround playability and economic pricing. The Wilson NXT Power 16 string is constructed with polyurethane impregnated, high crystallinity Xycro Micro Fibers that have been processed for an enhanced feel and power when you strike the ball. Its soft and comfortable feel combined with its impressive durability makes it an ideal choice for players looking to hit powerful shots that are gentle on the arm. Gauge 161.30mm Length 40ft12m Composition Multifilament. NXT Power features high crystallinity xycro microfibers bonded with polyurethane for an ideal combination of soft feel and explosive power upon contact. It's been rated as the #1 comfort string by USRSA, and it features a 15% larger sweet spot and 80% less vibration than traditional synthetic gut string. The core is composed of a ribbon-like co-polymer, which increases its tensile strength and reduces the amount of tension lost while hitting shots. Originally labeled NXT Tour, this string's softness and comfort are about as close as it comes to natural gut. This 16 gauge string is slightly thinner than the 17 gauge, which enhances feel and control when hitting shots.