The Dunlop PRO Squash Balls
- 1 dozen (4 x 3 Ball Tube) are high quality balls that are perfect for professional, tournament & club use. An elastic hydrocarbon polymer is impregnated with 12 compounds resulting in a construction material with supreme playability & durability characteristics. They come in 4 tubes of 3 balls & are the official balls of the World Squash Federation (WSF), Professional Squash Association (PSA), & Women's International Squash Players Association (WISPA) as well as the only balls used in all international professional competitions.