Sturdy & Safe Fully Wrapped FlywheelThe enclosed design of the flywheel ensures that there is no risk of accidental contact,don't need to worry about causing harm to your pets and family.Built with a robust steel frame and a 30LBS flywheel, this exercise bike guarantees exceptional stability and durability, providing a solid foundation for intense cycling sessions Hyper-Quiet Belt Drive SystemEquipped with the latest technology in belt systems, this exercise bike operates smoothly and quietly,allows you to exercise without bothering others.By turning the resistance adjustment knob, you can set your own training plan according to different resistance levels, experiencing a real cycling feel. Pressing this button will quickly stop the exercise bike, ensuring safety