Jolly Mega Ball by Horsemen's Pride. This heavy duty inflatable ball is made specifically for horses. This durable exercise ball that can be used for enjoyment or training and is a favorite of Natural Horsemanship practitioners. Comes ready to inflate with a foot pump. Product Details: Inflatable Ball Foot pump is included. To ensure continued long lasting enjoyment, store your Jolly Mega Ball™ indoors when not under supervised use.