A dry ice container is a specialized, highly insulated vessel designed for the safe and effective storage and transport of dry ice (solid carbon dioxide), which maintains extremely low temperatures, typically around -78.5°C (-109.3°F). These containers, often referred to as dry ice shippers or bunkers, are constructed with thick, high-performance insulation, such as vacuum insulation panels or thick layers of polyurethane foam, to minimize the sublimation rate of the dry ice. While designed to retain cold, they are not airtight; proper ventilation is crucial to allow the sublimating CO2 gas to escape, preventing pressure buildup and potential rupture. Dry ice containers are indispensable in medical and scientific fields for shipping and storing ultra-low temperature sensitive materials, including certain vaccines (like mRNA vaccines), biological samples (e.g., cells, tissues, DNA), and some laboratory reagents. Their robust construction and ergonomic design often include sturdy handles and secure latches for safe handling and transport. The use of a dedicated dry ice container ensures the prolonged integrity of the ultra-cold chain, preventing temperature excursions that could compromise the viability or efficacy of critical biomedical products. Proper training on safe dry ice handling, including ventilation and personal protective equipment, is essential when using these containers.