US Open Extra Duty Tennis 3 Ball Can Football The supportive heel design creates

The supportive heel design creates a locked-in feel to inspire confidence when making quick cuts

Created with unique styles and designed for sun protection and breathability during high-intensity activities

Ideal for racing & outdoor swimming

Training computer can be controlled by smartphone or tablet PC with the i Console+ app

Provides deep tissue compression for fast

US Open Extra Duty Tennis 3 Ball Can Football The supportive heel design createsThe Wilson US Open Extra Duty Tennis Balls are produced with a high quality wool that is then woven into a thick and dense feltThis unique Method of producing the felt is great for hard and abrasive outdoor courtsHigh altitude core for best performance on courts above 3000 feetThe Wilson US Open Extra Duty Ball has been the official ball of the US Open since 1978USTA and ITF approved for competitive play