The Wilson OPTX game ball is a high-end, competitive grade volleyball that is modeled after the AVP OPTX. Constructed of the same high-quality materials, this volleyball is perfect for athletes looking for one of the best outdoor volleyballs. Featuring the patented VST (visual spin technology) this ball uses color variance to allow spin detection so players can see and react to ball movement better. This outdoor ball is designed specifically for beach volleyball, allowing it to be held up to the standards of the game and providing the optimal experience for its players. The OPTX is NCAA and FIVB certified, making it suitable for collegiate level competitive play.