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Socks Protection 400


Socks have insulating terry knit in feet and shafts. Extra elastic in the beginning and end of shaft for comfortable fit.

60% Merino wool

12% Polyamide

2% Elastane

26% Aramid

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Socks Protection 400 are made from our classic Ullfrotte Original 400 fabric crossed with flame-resistant synthetics allowing for optimal safety and comfort. It’s a warm and comfortable sock that is suitable for wearing directly next to the skin or as a second layer. Woolpower Protection Socks 400 are certified according to special EN standards such as flame retardant and antistat. Wool is flame resistant in itself and does not melt, preventing severe burns. For maximum protection, we recommend that you use a complete base layer together with other certified outer garments.

Ullfrotté Original 400 gram can be used in colder conditions or when you don’t intend to move around much. Then it’s best to wear one of our thinner base layers underneath, such as Woolpower LITE or Ullfrotté 200, that are designed to be worn closest to the body. By wearing Woolpower directly against your skin you gain the most benefit from all the good properties that wool has.

60% Merino wool

12% Polyamide

2% Elastane

26% Aramid


  • Machine washable 60°
  • Do not bleach
  • Iron on medium temperature
  • Tumble dry on low heat
  • Dry clean, any solvent except trichloroethylene

Additional information


Ullfrotté 400


36-39, 40-44, 45-48




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