"The P10 is a totally self-contained 40-150 psi ribbed paraboloid (egg shape) underground disaster shelter designed to protect up to 10 people for long periods or 20 people for short durations such as during tornadoes. The product was specifically designed and developed to protect people during and after disasters such as tornadoes, hurricanes, earthquakes, storms, forest fires, power failures, nuclear power plant accidents, nuclear/chemical terrorism, and full-scale protracted nuclear, chemical and biological war."