The bassinet-like wahakura is an Indigenous initiative for the prevention of Sudden Unexpected Death in Infancy (SUDI). It was developed by New Zealand Maori in 2005 when Maori were rejecting the 'stop bedsharing' SUDI prevention message and the SUDI disparity between Maori and non-Maori had become entrenched. Made of native flax, the wahakura was promoted as a culturally resonant, in-bed safe sleep device that would disrupt the SUDI risk associated with 'bedsharing where there was smoking in pregnancy' without relying on smoking cessation. A significant movement of weavers and health professionals grew around the wahakura program. A body of research, including infant care surveys, retrospective case review, qualitative enquiry and a randomised controlled trial comparing wahakura and bassinet safety demonstrated the device's public health plausibility, acceptability to Maori women and its essential safety. This facilitated the distribution, by District Health Boards, of safe sleep devices, including a related device called the Pepi-Pod, and safe sleep education to high-risk, mainly Maori, mothers. Infant mortality in New Zealand fell by 29%, primarily among Maori infants, over the period 2009-15, suggesting that Maori cultural concepts, traditional activities and community engagement can have a significant effect on ethnic inequities in infant mortality.