Wilson Unisex-Adult Tennis Balls, US Open, 2 Cans with 4 Balls Each, for Hard Surfaces, Yellow, 8 Balls

Tennis balls for all hard surfaces, one size, official US Open balls, ITF- and USTA-certified - Optimum durability and performance, ideal for hard courts - Durable, hard core, made of quality wool and durable felt, cover made of high-quality extra duty felt - With resealable can for tidier storing and longer durability.