Tube Pro is a premier supplier of commercial grade PVC tubes for various industries worldwide. We have applied our expertise to manufacture our NEW heavy-duty Polo Sport water tube specifically designed for varsity inner tube water polo applications. Polo Sport by Tube Pro features a 33" inflated outer diameter, which is preferred size for the majority of water polo players. The smaller outer diameter allows players to maximize their game maneuvers in the water, and the 16" inner diameter hole is the perfect fit for central tube stability.