2021 Updated Exercise Bike- Equipped with flywheel, Thickened triangular steel frame and whisper quiet Belt driven system, FansQ Stationary Bike enhances the stability and sturdy during your ride both in sitting and standing positions. ALL-INCLUSIVE FLYWHEEL,SAFE RIDING: The all-inclusive flywheel design, no need to worry about the safety hazards caused by the exposed flywheel at all times, to protect the safety of children BICYCLE POSITION CAN BE ADJUSTED: Adjustto The Best Position According To Your Figure