Dual use for leg or arm exercise. Adjustable resistance to increase or decrease effort required. Simple as that.
Mini Pedal Exercise Bike, Pedal Exerciser, under Desk Bike, Mini Stepper with LC
Portable Mini Pedal Exercise Bike Arm Leg Foot Resistance Cycle Pedal Exerciser
Portable Mini Pedal Exercise Bike Arm and Leg Resistance Cycle Pedal Exerciser
