The pods, which are made from wood and steel, were put in parks and other places, a spokesman for the city said. To shield the homeless from the wind and cold, the beds have been equipped with thermal insulation. They are also big enough for use by two individuals. There are no cameras, and when they are in use, sensors are triggered. Those behind the project, amid some delays, announced that they had eventually been rolled out just as the weather began to take a turn for the worse.