A gasoline-powered lawn mower, which had been used earlier to cut grass, was left unattended next to a water heater that had been manufactured by Sears. Expert Testimony was presented to demonstrate that vapors from mowers' gas tank accumulated under the water heater and resulted in an explosion. Three-year old Shawn Toups was injured as a result. He was not burned on the soles of his feet or the palms of his hands. Is sears liable to the Toups in strict liability