This image provided by NASA shows the space shuttle Endeavour backdropped by a blue and white Earth, taken by a member of the Expedition 20 crew onboard the International Space Station shortly after the shuttle and station began their post-undocking separation on Tuesday July 28, 2009. (AP photo/NASA)
CAPE CANAVERAL, Fla. (AP) - In what might embarrass less adventurous souls, astronaut Koichi Wakata is returning to Earth with the underwear he kept on for a solid month during his space station stay and scientists will check them out.
They're experimental high-tech undies, designed in Japan to be odor free.
The Japanese spaceman described his underwear test Thursday.
Wakata has been off the planet for 41⁄2 months.
"I haven't talked about this underwear to my crew members," Wakata said, drawing a big laugh from his six shuttle colleagues. "But I wore them for about a month, and my station crew members never complained for about a month, so I think the experiment went fine."
The Japanese underwear, called J-Wear, is a new type of anti-bacterial, water-absorbent, odor-eliminating clothing designed for space travel. The line includes shirts, pants and socks as well. Wakata tested all of them during his mission; he had four pairs of the silver-coated underwear, a cross between briefs and boxers.
"We'll see the results after landing," Wakata said.
J-Wear is billed as being antistatic and flame retardant, which is especially important for spaceship wear. The cotton and polyester clothes are also seamless, making them lighter and more comfortable, according to the Japanese Space Agency. The goal is "comfortable everyday clothes for life in a spaceship."
NASA's space station program manager, Mike Suffredini, stressed the importance of testing new products, especially those aimed at improving astronauts' quality of life.
"Eventually, we're going to do exploration. We're going to go to the moon. We're going to go beyond the moon someday, and little things like this will seem like really, really big things when you're far away from Mother Earth," Suffredini told reporters.