RecruitingBehavioural interventionGet Social Media and Risk-Reduction TrainingThis study examines the implementation of the TodaysBaby™ mobile safe sleep intervention program in US hospitals. The main aims of this study are to examine: 1) differences in program penetration and the equity of penetration according to income and race/ethnicity; 2) differences in feasibility, acceptability, sustainability and fidelity top the intervention; and 3) the effectiveness of the intervention.