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FNDN 3.7V Heated Liner Socks
FNDN 3.7V Heated Liner SocksFNDN 3.7V Heated Liner SocksFNDN 3.7V Heated Liner SocksFNDN 3.7V Heated Liner SocksFNDN 3.7V Heated Liner SocksFNDN 3.7V Heated Liner SocksWatch Video

FNDN 3.7V Heated Liner Socks

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Product Description
About FNDN

FNDN Heated 3.7V Liner Socks: FNDN rechargeable heated liner socks with long working hours and cozy temperature will keep your feet warm and comfortable all day long. The material is a moisture wicking, breathable stretch fabric that's thin enough to be worn under other socks or by themselves in tight form fitting situations. Forget about frozen toes or discomforting pain in the winter mornings or evenings. We've found the solution for you by designing the thinnest form fitting rechargeable heated sock for women and men.

The liner socks are powered by our proprietary Radiant Core Heat technology and USB rechargeable BEGO battery system. This battery is the smallest & lightest in class, designed to provide the most power with the smallest footprint possible.

The heated sports socks offer enough warmth to provide great relief from poor circulation, arthritis, Raynaud's Syndrome and any kind of winter cold issues.

Winter Is Coming, We Are Ready.


  • Machine Washable (*Must Remove Batteries)
  • 4 Radiant-X Core Heating Levels including High, Med, Low & ""Smart Pre-Heat""
  • 5-hour continuous run time
  • Small & Lightweight high-performance BEGO Battery System
  • Universal USB Charging

Fabric: 100% Acrylic; Soles: 65% Polyester, 25% Cotton, 10% Spandex

FNDN Heated Liner Socks Include:

  • 1 Pair Liner Socks
  • 2 3.7V Li-Ion Rechargeable ""BEGO"" Batteries
  • 1 USB Dual Battery Charging Cable

*Smart Pre-Heat: Features a battery-saving ""Smart Pre-Heat"" mode. The pre-heat mode happens when initially turning the controller on. The LED is red, but will slowly flash red. The smart pre-heat occurs for the first five minutes and then automatically kicks to medium to save battery. You can bypass this level by simply pressing the button again.

Battery RUN Times:

  • High - Red - 75 min
  • Med - White - 165 min
  • Low - Blue - 270 min

Care Instructions:

  • Machine Wash Delicate (Remove Batteries)
  • Use No Bleach
  • Do Not Machine Dry
  • Do Not Iron

At FNDN, we believe it's not about where you are, but where you are from.

There's an old saying that each generation is most like their grandparents. In our grandfathers' America - before the Internet, cell phones, and video games - our "greatest generation" was a well-oiled industrial machine running wide-open with the Motor City at the heart of it all. FNDN's foundation happens to be firmly rooted in Detroit and that same innovative spirit is part of our DNA.

Our products share that same mold our grandparents valued. The industry, the inventions, the manufacturing, and even the music has branded a loyal, patriotic, hardworking ethos into us. Combining quality materials, craftsmanship and utilizing cutting edge technology, we strive to create the finest products available that are both beautiful and functional.

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