Mini Bike Trainer. I was given this to help my recuperation after a knee operation but my physio said I would be better off using a stand alone exercise bike instead.
Portable Pedal Exerciser Arm Leg Foot Cycle Pedal Mini Bike Trainer
Portable Pedal Exerciser foldable Arm Leg Foot Cycle Pedal Mini Bike Trainer
Portable Pedal Exerciser Arm Leg Foot Cycle Pedal Mini Bike Trainer Blue