The Single Sky Walker blurs the line between fun and exercise keeping you working out longer. This form of cardio is easy on the joints while still being an intense workout. You stand on the foothold, grab the safety bar and move your legs back and forth. It improves heart and lung health as well as helps alleviate stress. Leg muscles benefit too! The Single Sky Walker couldn’t be any better for outside use. The steel that comprises this station is galvanized for battling various weather and climate. Rusting is eliminated as well from the powder-coat paint job that the steel has. A great motivator is having a fellow workout partner. The Double Sky Walker gives someone another place to workout and the Triple Royal Sky Walker has two! Cardio based fitness has never been this easy, fun and strenuous.