Durable, but soft polyester string with unique construction. Offers great control, which is well suited to big hitters. Gauges: 1.20, 1.24mm Colours: White, Black. The item "Gosen Polybreak Tennis String" is in sale since Wednesday, July 18, 2018. This item is in the category "Sporting Goods\Tennis\Strings".The seller is "stringersworld" and is located in Essex. This item can be shipped worldwide.