How do you lock the front wheels for off-road use? With YOYO, there's no need to block the front wheels! The wheels are fitted with the patented 'Soft-Drive' system which eliminates the steering drag of rough terrain. Other items that may interest you Is BABYZEN YOYO comfortable? Is BABYZEN YOYO easily manoeuvrable? Is BABYZEN YOYO practical? Can YOYO be taken onboard a plane? Is it difficult to fold and unfold YOYO? How do you fold YOYO when equipped with car seat adapters? How do you carry YOYO when folded? Is YOYO freestanding when folded? Can you fold the handlebars on YOYO? What is the maximum weight supported by YOYO? What is YOYO made of? Are the BABYZEN YOYO fabrics compatible with all YOYO frames? Are the fabrics washable? Can you change colors easily? Is YOYO equipped with a brake? Are the straps of the 5-point harness adjustable?