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Thermo HM 1
A thick, calf-length sock made from Zirpro virgin wool with meta-aramide fibre. Flame-resistant and specially designed for fire crews and welders. These socks are safe and yet comfortable too. Complies with safety standards EN 531.
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Flame Proof
A flame-retardant sturdy calf-length sock made from Zirpro virgin wool with meta-aramid fiber. Offers good protection in extreme heat and is extra comfortable. Specially designed for fire crews and welders. Complies with safety standards EN ISO 14116:2015. Download Certificate (EU) 2016/425.
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Thermo HM 2
The Thermo HM 2 is a thick calf-length sock made from virgin wool to keep the feet pleasantly warm and dry. Ideal for in boots and high cut shoes. The Thermo HM 2 offers a perfect fit with a specially long band to prevent sagging.
