This was the very first model of extreme cold thermal socks introduced on Grand Froid — and it's still one of our best-sellers.
Since 2010, numerous professionals have trusted these socks to protect their teams in extreme sub-zero conditions. They’ve been tested down to -50 °C in industrial, medical, and climatic chambers — with outstanding performance.
The result: they've been validated and continuously used for over a decade. They remain among the warmest and most reliable thermal socks available today.
The Heat Holders range has since expanded to include multiple thicknesses, warmth levels, lengths and specialist designs — including safety socks, long-leg versions, and non-slip slippers. But this Finch model remains the reference point for performance and protection.
Its secret lies in a unique Japanese thermal yarn — soft, insulating and highly breathable — that keeps feet warm without trapping excess moisture. This technology is what earned Heat Holders its reputation for cold-weather excellence.
COMPOSITION
- 91% acrylic – warm and soft
- 5% nylon – flexible support
- 3% polyester – durability
- 1% elastane – comfortable fit
BENEFITS
- Extreme thermal protection tested to -50 °C
- Patented thermal yarn – 7x warmer than cotton
- Brushed inner lining traps heat close to the skin
- Japanese yarn: soft, insulating and breathable to prevent moisture buildup
- No compression: ideal for sensitive feet or circulation concerns
- Still used today in industrial and medical environments
SIZING
Men’s one size: fits EU sizes 37 to 50.
Tip: For best thermal performance, wear in suitable boots. A snug fit prevents creasing and holds heat more efficiently.
WEEK DEAL: 20% OFF WHEN YOU BUY 5 PAIRS
Add 5 or more pairs to your cart to activate the discount.
The discount is applied automatically.
1 free pair for every 5 — when it’s -30 °C, that’s a no-brainer.
CARE INSTRUCTIONS
- Machine washable up to 40 °C (manufacturer recommendation)
- Grand Froid tip: wash at 30 °C to help prolong sock life and thermal performance
- Do not tumble dry
- No softener or bleach
- Dry flat — avoid direct radiator heat
