Ollyball & USA Volleyball have teamed up to bring you the ultimate full-force indoor Volleyball experience. Ollyball’s Patented KrunchCOR construction was designed for full-speed, full-force indoor play. Ollyball’s durable shell is waterproof and perfect for indoor volleyball! Ollyball’s shell is made from a durable and sustainable up-cycled material which has been called one of the "most sustainable textiles on the planet." COLOR-IN your Ollyball using any marker: water-based, washable, or permanent! Quickly inflate and deflate your Ollyball with the included straw. WINNER of a Toy of the Year, Family Choice Award, and Boys' Life Top 19 Toys.