Wilson Synthetic Gut Power 17G Tennis String Reel , Black ytr The yellow lattice structure is

The yellow lattice structure is mathematically designed to replicate the flight mechanics and air resistance of a natural feather canopy

helping them develop better shot placement and consistency

graphite smudge marks from re-gripping

Material: Premium Polyurethane (PU)

Wilson Synthetic Gut Power 17G Tennis String Reel , Black ytr The yellow lattice structure isThe Wilson Synthetic Gut Power 17G in Black (660 ft 200 m Reel) is a high performance, thinner gauge version of Wilson's most popular "all arounder." This 17G variant is engineered for players who want a sleeker look and enhanced "bite" on the ball, providing a more professional, responsive feel than the thicker 16G version. This string is built with a solid monofilament nylon core and surrounded by a layer of high energy outer wraps. The "Power"