Blue Flame Thermals

(11 reviews) Write a Review

What Size Do You Need?

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.


You Need Sock Size
6-10.5 5-9 M
10.5-14 9-12.5 L

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Sock Materials:

94% Acrylic / Polyester / Rubber

Blue Flame Thermal Socks Warmth Index

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11 Reviews

  • 5
    Blue Thermal Socks

    Posted by Rose on Dec 8th 2017

    These are really nice socks at a great price. Soft, cozy, and very warm. Wore them today with temps in the 20s and windchill temp in the teens. Kept my feet nice and toasty. My feet fell "toes over heels" in love! Buying more.

  • 5
    Blue Flame Thermal

    Posted by Eileen Holfeld on Dec 5th 2017

    This is a Christmas gift so can't review at this time but I bet it will be a 5 Star.