This is PRO level squash ball used in squash competitions around the World. It is aprowed as official squash ball by World squash federation and Professional squash players association.

Dunlop double dot squash ball - The official ball of the World Squash Federation (WSF) and Professional Squash Association (PSA), Women's International Squash Players Association (WISPA), Squash Canada and the United States Squash Racquets Association (USSRA) and the only ball used in all international squash competitions.