Li-Ning’s No.7

Li-Ning’s No.7 is a premium staple for your

prized racket. An ultra-durable string, it

promises super durability and a soft hitting

feeling. The core of the string is made of high

polymer and nylon filament. The outer part

of the string is made of heat resistant and

high-intensity nylon. This string comes

engineered with Li-Ningís Deep-Re-Dipping

technology that helps improve durability and

prevent loss of tension. The string is coated

with compound nylon that gives you a

fantastic hitting feeling