


Sizes: 12-14 / 6-8.5 / 9-12
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Designed for maximum warmth, these thermal socks feature innovative Heatgen™ technology that helps generate and retain heat during colder weather. The Navy material includes added stretch for superb comfort, perfect for the season.
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 policyDesigned for maximum warmth, these thermal socks feature innovative Heatgen™ technology that helps generate and retain heat during colder weather. The Navy material includes added stretch for superb comfort, perfect for the season.
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, all socks, or everything from Marks & Spencer.
The M&S Thermal Socks with Heatgen™ in Navy is ideal for everyday, winter.
Ideal for layering under boots or casual shoes during chilly days.
The M&S Thermal Socks with Heatgen™ in Navy is available in sizes 12-14, 6-8.5, 9-12.
Second-hand alternatives to the M&S Thermal Socks with Heatgen™ in Navy on Vinted, Depop and other UK resellers.