

Sizes: 12-14 / 6-8.5 / 9-12
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These longer length thermal socks bring warmth to cold conditions with their thick, insulating design. Our innovative Heatgen™ thermo technology works to keep you comfortable when temperatures drop. A fabric combination generates and retains heat for lasting comfort throughout the day.
Marks & Spencer — £3.99 standard delivery, free over £60.00 via Standard, typically 2-4 working days.
Marks & Spencer offers free returns within 28 days. Post back via the retailer's chosen courier (free), or in-store where available.
View Marks & Spencer's returns policyThese longer length thermal socks bring warmth to cold conditions with their thick, insulating design. Our innovative Heatgen™ thermo technology works to keep you comfortable when temperatures drop. A fabric combination generates and retains heat for lasting comfort throughout the day.
Marks & Spencer — £3.99 standard delivery, free over £60.00 via Standard, typically 2-4 working days.
Marks & Spencer offers free returns within 28 days. Post back via the retailer's chosen courier (free), or in-store where available.
View Marks & Spencer's returns policyLooking for similar styles? Browse more socks from Marks & Spencer, weekend socks, all socks, or everything from Marks & Spencer.
The M&S Thermal Socks in Grey Mix for Maximum Warmth is ideal for weekend, travel, casual.
Pair with your favorite boots for maximum warmth and comfort.
The M&S Thermal Socks in Grey Mix for Maximum Warmth is available in sizes 12-14, 6-8.5, 9-12.
Second-hand alternatives to the M&S Thermal Socks in Grey Mix for Maximum Warmth on Vinted, Depop and other UK resellers.