In regions like Fiji, where reliable electricity is scarce, maintaining the cold chain for critical medical supplies remains a major barrier to effective healthcare. With support from PREO, Blackfrog Technologies – working alongside SB Max Institute of Healthcare Management and PATH – is tackling this challenge through Emvólio, a solar-compatible rapid cooling device engineered for the safe last-mile transport of vaccines, blood serums, and medications. Designed to minimise thermal shock and maximise energy efficiency, Emvólio ensures the integrity of sensitive medical supplies even in the most remote settings.