Acorn Original "Astronaut" Slipper Sock Size:XS (W's 6.5-7.5) INSULATION: Removable 9mm felted InnerBoot

INSULATION: Removable 9mm felted InnerBoot

Designer: Pardue

8 mm suede leather upper

when fully charged you can treat 50L

Acorn Original "Astronaut" Slipper Sock Size:XS (W's 6.5-7.5) INSULATION: Removable 9mm felted InnerBootAstronaut Approved! From the Smithsonian National Air and Space museum: "Astronauts working aboard the Space Shuttle and International Space Station often wear slipper socks like these. Shoes are not necessary in weightlessness, but crewmembers enjoy the comfort and warmth of soft footwear. Many astronauts simply wear socks as they float around inside the spacecraft. The manufacturer [Acorn] gave these slipper socks to the Museum to use on mannequins