The Flash Dance Collection features a tight back, track arms, and a loose reversible seat cushion. The seat core comes standard with our Energex Premium cushion. Energex Maximum Performance Seating provides revolutionary technology with the pressure relief of memory foam, but the bounce and comfort of latex. The tempature responsive foam adjusts rapidly for dissapation of body heat to ensure cool, comfortable seating. The swivel gliding action is smooth, quiet and incredibly soothing.