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The Ulmer Nest is an emergency, solar-powered sleeping pod, developed in Ulm, Germany, that protects unhoused people from life-threatening sub-zero winter temperatures. Built from solid wood and powder-coated aluminum, the pod features triple-layer thermal insulation to retain body heat without open heaters.
It is windproof and waterproof. The project is strictly a short-term, last-resort safety net for those who avoid traditional shelters—often due to fear of violence, separation from pets, or severe anxiety.
One pod can accommodate up to two people. While discussed or proposed as an idea in U.S. cities like San Francisco, widespread or official deployment of the specific German Ulm design is not standard in the United States.
