Introducing Pacific - the official string of the ATP Tour! Pacific PMX 16L provides a great combination of power, touch, and comfort. Through the use of patented microfiber string technology, combined with a unique premium thermo elastic polyurethane, Pacific has achieved durability and vibration absorption not found in most polyester strings.Color: NaturalLength: 40 ft. (12.2m)Gauge: 16L (1.29mm)