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FNDN™ Heated 3.7V Base Layer Socks
Never deal with frozen toes again. The FNDN™ Heated Base Layer Socks are designed as the thinnest, form-fitting heated socks on the market—slim enough to wear under or over other socks while still delivering powerful warmth all day long. Built with Radiant Core Heat™ technology and powered by the ultra-c
3.8
25 ratings
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The socks are wonderful. It’s really worth getting the vest and getting the socks. The socks go almost up to your knees and can go over other socks and inside your pants and keep you incredibly warm. I just use them to be outside for an hour and a half shoveling snow and my feet were warm the whole time.
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David · January 4, 2026
These are great. I got them for hunting and fishing but I wear them mostly for winter golf because golf shoes are not insulated and there is no room for insulated socks in snug fitting golf shoes. I wear them under a thin pair of regular socks and they keep my feet warm for a full round of golf on the low setting.
The only reason I don’t give them five stars is the absence of a remote method to change the heat setting. I have worn them for hunting and under waders in cold water and it’s a pain to change the setting because the control is under your pants or waders. I bought zippered pants for hunting just so I could access the controls, which was a work around, but an added expense.
IMO these are five stars if you don’t need to change settings or you have easy access to the controls, or you have figured out the best setting for your application through trial and error and you can set it and forget it.
So for me, they are 4 or 5 stars depending on the application and well worth the purchase price.
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Daniel · December 24, 2025
Comfortable. Easy to slide another pair of socks over the top of them.