The original Blue Flame thermal sock is a thick, heavyweight sock. The brushed acrylic construction has ultra-soft insulation in the inside that retains 600% more heat than cotton — this sock rates four flames out of four for thermal properties.
- 600% warmer than cotton.
- A soft and plush half-inch thick sock.
- Insulated brush acrylic construction trap and hold heat.
|
IF YOU WEAR SHOE SIZE | You Need Sock Size | |
|---|---|---|
| 6-10.5 | 5-9 | M |
| 10.5-14 | 9-12.5 | L |
Sock Materials:
94% Acrylic / Polyester / Rubber
17 Reviews
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softest socks
These are the only ones my husband will wear. He's super picky and these socks are very soft and comfortable.
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Blue flame thermals
They are great as usual but heavier than I expected.
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These socks are SO warm!
I love these socks! I have actually mended some of my older Blue Flame socks because of swelling in my ankle and foot — so the looser tops are just right. I hope these socks are available for a long time! :)
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Cosy
My feet stay warm and dry. I love these socks !
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Love lounging in my thermals
My feet stay dry and warm and I still wonder how is that possible !! I don’t have skinny calves and they are a bit snug but I fold them over and enjoy my newfound treasure!
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Thermals
These are wonderfully soft, thick, and warm. Just what I was looking for as a bed sock.
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Awesome Sox
Love these socks ! Haven’t tried them with shoes or boots yet thinking they going to be tight because of the thickness but
worth every penny. With slippers or without my feet were toasty ~
not sweaty just perfect. -
Warm and Thick
I like these socks, but they are so thick that I use more like slippers around the house versus trying to shove by boot over them.
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As Advertised, will buy again
Got mine primarily for sleeping, feet get cold at night. Very satisfied and extremely comfortable. Will buy more for wearing with my boots.


