GoSports Slammo Competition Ball 3-Pack | Works for All Roundnet Sets OFFICIAL SLAMMO BALLS: Includes 3 Slammo Competition Balls - Perfect for Slammo or other Roundnet Sets SUPERIOR DESIGN: Durable build to withstand the fun and excitement of Slammo EXTRA GRIP: Deep grooves to make for the best play experience ATHLETIC TRAINING: Slammo and Slammo balls are perfect for coaches and athletes running hand eye coordination drills