Whenever Felix Baumgartner makes his jump from roughly 23 miles above Roswell, N.M., the only thing protecting the Austrian sky diver as he hurtles through the Earth’s atmosphere near the speed of sound will be a high-tech, pressurized suit designed by a Worcester company.

Baumgartner’s leap, postponed Tuesday because of high winds, is meant to test advances in the technology used to make spacesuits, and to collect data that will help companies like the David Clark Co. of Worcester make further improvements to such gear. The firm has specialized in outfitting high-altitude aviators and astronauts for 71 years.