StairMaster - The StairMaster Store
Stairmaster is the name of and a line of exercise machines, which includes stepping machines and revolving stairs. Their original product, the Stepmill, was introduced in the 1980's. The Stairmaster independent dual-step machine was very popular in the 1980s, but it has been somewhat supplanted by elliptical trainers, which are less stressful on the knees. The company was acquired in 2002 by Nautilus, Inc., which produces Nautilus, Stairmaster, and Bowflex exercise machines.