Stable Structural And Sturdy Load-Bearing:Our exercise bike is made of high quality steel construction and holds up to 150 kg. Scientifically stabilize the big triangle structure, more stable during sports and more reliable riding. 6 kg MAGNETIC Flywheel & Belt Drive System: Indoor cycling Bike Equipped with a 6 kg bidirectional Magnetic flywheel offers more momentum to give you a challenging exercise experience while cycling and enjoy an incredibly smooth,nearly silent and stabile ride.Virtually no maintenance with Belt drive mechanism.You'll feel the difference in your first workout. Resistance & Quick Stop:Adjust the intensity of your exercise bike with the convenient tension knob.Press down the emergency knob to stop spinning immediately.Anti-Slip pedals with adjustable toe cages and straps make your cycling much more safer.Heavy duty Commercial grade steel frame and crank.