Acorn Original "Astronaut" Slipper Sock Size:XS (W's 6.5-7.5) which helps keep you comfortable

which helps keep you comfortable as temperatures rise and humidity increases

With just one product you are able to target every flexor

when fully charged you can treat 50L

Sizes: 36 - 42 (whole sizes)

EPA drinking water standards* and NSF protocol P231 testing standard

Acorn Original "Astronaut" Slipper Sock Size:XS (W's 6.5-7.5) which helps keep you comfortableAstronaut 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