What is One hand fold?

A one hand fold means the frame collapses from a single grip while the other hand stays free, which matters on pavements, at bus stops and on stairs where both hands are busy. A fold that needs two hands takes longer and often means setting the child down first. Babyzen, Bc Babycare, Bellini, Baby Jogger and Bombi all state a one hand fold on the products listed, so the difference shows up mainly in how the mechanism is operated.