Experiment -- How does a spring behave in winter? No nonsense parqadox, this is a serious question opposed to research engineers. Some materials become brittlein snapping cold. These are plastic springs for cold - chamber experiments. Arrows indicate tubes that feed warm air inside helmets.Winterized Spring .... How does spring behave in Winter? Sounds strange, doesn't it. The springs are plastic springs and they are subjected to the low temperature test. Some materials become brittle at low tem