This Parallax Hay Play is the original spherical shaped slow forage feeder. Its unique design has thirty two flat faces that enable the feeder to roll around as the horse grazes from it. The movement of the hay play challenges and entertains the horse and offers all the benefits of slow feeding without the need for additional treats or feed. The single piece construction makes it incredibly strong and durable. Features: thirty two flat faces, all the benefits of slow feeding without the need for additional treats or feed, strong and durable. Size Guide: Available in one size - 43cm.