

Sizes: 12½-14½ / 6-8½ / 9-12
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This is a pack of three thermal socks designed for maximum warmth. Featuring innovative Heatgen™ technology, these socks help generate and retain heat during colder weather. The material includes added stretch for superb comfort. Ideal for daily wear, these socks are perfect for keeping your feet warm during winter commutes, outdoor activities, and casual evenings at home. Style with your favourite pair of boots or casual shoes. Polyester blend, machine wash cold.
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 policyThis is a pack of three thermal socks designed for maximum warmth. Featuring innovative Heatgen™ technology, these socks help generate and retain heat during colder weather. The material includes added stretch for superb comfort. Ideal for daily wear, these socks are perfect for keeping your feet warm during winter commutes, outdoor activities, and casual evenings at home. Style with your favourite pair of boots or casual shoes. Polyester blend, machine wash cold.
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.
Looking for similar styles? Browse more socks from Marks & Spencer, black socks, all socks, or everything from Marks & Spencer.
The M&S Black Thermal Socks 3 Pack works for everyday and outdoor.
Pair with your favourite pair of boots or casual shoes for a warm and comfortable winter look.
The M&S Black Thermal Socks 3 Pack is available in sizes 12½-14½, 6-8½, 9-12.
Editor's edit
Pair with your favourite pair of boots or casual shoes for a warm and comfortable winter look.
See all outfit ideasSecond-hand alternatives to the M&S Black Thermal Socks 3 Pack on Vinted, Depop and other UK resellers.