Navatiee Wagon S1 is roundly upgraded to provide an efficient and simple solution for daily use. The upgraded S1 features 360 rotating front wheels with brakes and a surprise side pocket. You'll have nothing to fear. We are confident in our roundly upgraded wagon S1, which makes it be your lifesaver. Heavy Duty Folding Wagon : Made of heavy duty alloy steel frame, the structure welded is absolutely solid and durable. The surface of the metal frame is anti-oxidation and corrosion-resistant, and it will not fade and rust when used outdoors for a long time.