Dherik Tradworld 1Pcs Stringed Tennis Balls for Tennis Trainer Device Tennis Ball  (Standard, Pack of 1)

These stringed tennis balls are perfect for tennis practice. With an elastic cord connecting three tennis balls, this trainer device allows you to work on swings, footwork and ball control without a partner. The 3 meter long rope provides plenty of reach for full-court drills and shadow play. Lightweight yet durable, the nylon netting securely holds each ball while allowing free movement. Rebound off the balls is soft enough for indoor use, while the string keeps them within reach. An affordable training aid, this 3-pack gives tennis players of all levels a portable way to practice their form and technique anywhere. Washable netting means these balls can be used time and time again.