In collaboration with a team from Boston Children’s Hospital, we advancing an infant warmer design that can be used globally in resource-limited locations to prevent neonatal hypothermia. A first iteration of the infant warmer has been field tested with success in Rwanda. Based on user feedback, we are further improving the design for mass manufacturing, while ensuing it can be reused up to 100 times, remains non-electric and easy to clean, and can be produced at low cost.