When using your product in certain environments water, mud and even salt can get onto your pushchair. If water or dirt is left for long periods on your frame this can cause rust on the metal parts. The best way to combat this is to wash each section of the frame with warm soapy water to wash off the mud and salt that sticks to your frame.
Please make note of the maintenance advice offered in the User Manual for the Chassis and Wheels, as this can prolong the lifespan of your products.
Scratches on the paintwork can also let rust set in faster.