The Sekey Classic Folding Wagon’s wheels are made of PU, which falls somewhere between plastic and rubber. This material is as strong as plastic and as elastic as rubber. It can be mixed in various proportions, depending on applications.
In the case of this Sekey folding cart, the PU wheels are rugged, easy to maneuver, and do not make an unpleasant noise. Learn more about this cart in this comprehensive guide.