Children's risky play is associated with a variety of positive developmental, physical and mental health outcomes, including greater physical activity, self-confidence and risk management skills. Children's opportunities for risky play have eroded over time, limited by parents' fears and beliefs about risk, particularly among mothers. We have developed a digital and in-person workshop version of a tool to reframe parents' perceptions of risk. We will examine whether the tool increases mothers' tolerance for risky play and influences parenting behaviour change, in the short and long term, and whether these changes are greater than those in the control group.