Lockable lid now more sturdy and secure

As a bonus

Meeting all of the specifications for USTA's 10 and under tennis as well as ITF's Tennis 10's programs

providing reliable support and comfort for up to 12 months or 500 miles

125" of total coverage

Yonex POLYTOUR Pro 17 1.20 Color:Warm Grey Lockable lid now more sturdyThe new Yonex Poly Tour 1. 20 17 tennis string is a polyester monofilament created in a specific way to provide excellent durability while also helping to reduce arm fatigue. This string also features a high repulsion power. Provides a comfortable feel that's easy on the elbow. Delivers greater durability and reduced fatigue.