Lifespan Fitness RBX-100 Commerical Recumbent BikeThe RBX 100 Commerical Recumbent Bike helps you to burn calories, build strength and aerobic endurance, with the support of the adjustable seat to help alleviate lower back stress. Engineered with a world class commercial grade frame, the RBX 100 is designed to endure the toughest workouts The magnetic flywheel is smooth and practically frictionless, with a massive 32 levels of magnetic resistance allowing you to up your workout with the twist of a