Solid X-frame foldable design folds to just 20.5" x 20.5" of floor space when not in use Ergonomically designed for comfort large contoured seat with back pad and multi-grip padded handlebars 2" x 1" LCD window clearly displays speed, distance, time, calories, and pulse 8 levels of manual resistance easily controlled with large dial tension knob for users of all fitness levels Handlebar mounted hand-pulse sensors monitor your heart rate and stay in your target zone