Bowflex introduced its first Power Rod Technology Incorporated Home Gym in 1993, which became a top seller, quickly bringing Bowflex to the top of the Home Fitness Industry. The previous leader, Soloflex, soon became obsolete for home fitness equipment purchases as every review favored the Bowflex. Bowflex continued to upgrade its Power Rod Technology incorporated home gyms, and still sells them today. The top unit - the Bowflex Ultimate 2, was introduced early this millennium and has been the top Power Rod Home Gym for years now. Bowflex continued to stay ahead of the game and introduced the Bowflex Revolution Home Gym - which incorporates its new patented Spiraflex Technology. It is heavily favored by astronauts at space stations.