NASA unveils a refrigerated undershort for the Moon

Published on June 10, 2026 | Translated from Spanish

NASA has unveiled the new undergarment for the spacesuit system, called the Liquid Cooling and Ventilation Garment (LCVG). This piece, white in color to reflect heat, will be worn beneath the lunar suit. Its purpose is to maintain a stable body temperature at the lunar south pole, where thermal changes reach 200 degrees.

astronaut at the lunar south pole adjusting the white LCVG refrigerated undergarment on their body, flexible liquid cooling tubes visible connected to a thermal control backpack, while the open spacesuit shows the interior ventilation system, extreme temperature changes represented by sharp shadows and icy surfaces contrasting with the lunar sun, gloved hands demonstrating the process of connecting the ducts, photorealistic technical illustration with dramatic high-contrast lighting, metallic texture of the suit and space engineering details

Active cooling technology for the lunar vacuum 🚀

The LCVG is not ordinary underwear. It integrates a network of tubes with cold water that circulates close to the skin to absorb body heat. A ventilation system extracts moisture and sweat, preventing them from accumulating inside the suit. The white design helps reflect direct solar radiation, while the liquid system compensates for the lack of convection in the lunar vacuum, where the body cannot dissipate heat on its own.

The underpants that save you from the lunar oven 🌙

Well, it turns out that to step on the Moon, you not only need a rocket, but also underpants with pipes. NASA has designed an undergarment that looks like it came out of a science fiction movie or a plumbing catalog. If it's already annoying to be hot on Earth, imagine being at the lunar south pole in a spacesuit and your only salvation being a cooling system in the crotch. At least the white color hides the sweat stains.