Bring the PENN® Pressureless Tennis Ball Bucket 48-Pack to your next practice so you can upgrade the way you train. The bucket comes with 48 tennis balls, which means you can work on your serve without having to stop and collect each ball. With pressureless cores, they won't gather too much speed coming off the racket or lose their bounce over time. When you're done for the day, simply pack the tennis balls back into the bucket and stow it away until the next practice.