The Double To Fro Glider is an excellent playground attraction which has two individual tire swings built just for preschool aged children. This of course doubles the number of children who can enjoy it at once, and others can push the riders while they wait for their turn. The tires are suspended by four chains with green coating which allow back and forth movement. Unlike most tire swings which can move in any direction, the Double To Fro Glider moves on a single axis, which is much safer and more predictable. The sturdy square top rail provides more than enough support for multiple riders. The Fiberglass Reinforced Plastic posts are available in five different colors: red, green, sage, tan, or blue.