When others zig, you ZAG! The ball's sporty grip and design is engineered for athletic play in the ocean, lake or pool. It's great for Wabobians looking for a sportier water bouncing ball. High quality PVA foam construction 3D textured grip Bounces on water Assorted colors Diameter: 3.5" How to bounce a Waboba® ball on the water: Throw side-armed to make ball skip low across the water Throw overhand to make ball bounce higher Bounce off the tip of a wave to make it go 15+ feet in the air Don’t throw straight down - it doesn’t bounce like a tennis ball The harder you throw, the farther and better it will bounce