This is a Request for Information (RFI) for modern, lightweight 5-man and 10-man Arctic Shelter systems to replace legacy equipment, seeking mature, commercially available technologies. The government is assessing capabilities for a potential future production effort that could exceed 3,000 systems. An Industry Day event for selected technologies is planned for June 2026. Responses to this RFI are due by 16 April 2026. The shelters must meet specific performance requirements, including weight limits, rapid setup, extreme cold operation, and signature management.