The Domyos Woodbike comes with a 6 kg flywheel for smooth, pleasant, incredibly quiet pedalling so that it can be kept in your living room no problem.
Important note: Wood is a natural, living material. This is why, when you finish assembling the product, it's important to fully tighten each of the screws on the wooden frame and feet, particularly the screws underneath the bike, as this will prevent it from creaking.