Tacx: The Galaxia takes you as close as possible to the natural road cycling experience, as the rollers move along with you. You can perform sprints, extend your legs and stand on the pedals without the fear of falling off. When accelerating, the Galaxia rollers move forward as a result of the kinetic energy that is created and they move backwards when you slow down. With this patented swing system you can work on your speed and suppleness without any concerns. The Galaxia is collapsible and easy to transport.