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M&S

3 Pack Heatgen™ Light Thermal Socks

£12

Colour

Out of stock online

Customers say:

Fits true to size()
Size

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Free standard delivery over £60

Product code: T104426

About this style

These super soft thermal socks bring warmth with a lightweight touch. Made from a combination of polyamide and other fibres, they feature our clever Heatgen™ technology that helps generate and retain heat during chilly days. A subtle contrast stripe on the toe adds a considered design element to this handy three-pack. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

Light warmth for cooler conditions and everyday comfort.

Details & care

Style

Product Style: Thermal socks

Added stretch

Features

Heatgen™ technology

lightweight and supersoft, designed to keep you warm when the weather gets chilly

Composition

52% acrylic, 26% viscose, 21% polyamide and 1% elastane

Care

Wash at 40°C

Do not bleach

Tumble dry medium temperature

Do not iron

Do not dry clean

Delivery, collection & returns

Delivery

Standard

UK Standard Delivery is available for £3.99 or free on orders over £60 (excluding furniture).

Nominated Day

UK Next Day Delivery and UK Nominated Day Delivery (excluding Northern Ireland) are available for £5.99 (excluding furniture)

Collection

Collect from store

Store collection is free on all fashion, home and beauty orders.

Returns

UK returns

Free

Exclusions apply

Full delivery and collection informationOur returns policy

Reviews (357)

4.3

67% Recommended this product

Mentions
19 January 2026Sweepymagic
Verified Purchase

Brilliant warmth despite not being that thick

A relatively think sock for a thermal sock, but surprisingly incredibly warm. I'm finding it great on its own as well as finer undersock.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 January 2026Nadaboume
Verified Purchase

Good value

Yes, I recommend this

Neat socks. Nice colour and fit.. Could be warmer.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 January 2026terryp60
Verified Purchase

Warm toastie socks

Yes, I recommend this

Very warm and comfortable socks without being bulky. Good value, good purchase.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 January 2026Marj76
Verified Purchase

Lightweight thermal socks

Yes, I recommend this

Bought as a present for my son in-law who during the Christmas holiday season went out walking on a bitterly cold day,he could not believe that after a few hours walking his feet were still lovely and warm wearing lightweight socks

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 January 2026Tecl
Verified Purchase

Light thermal socks.

Yes, I recommend this

Great price, light but soft and warm. Would highly recommend.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 January 2026Aggs
Verified Purchase

Great purchase.

Yes, I recommend this

Husband liked the material and the fit and the colour.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 January 2026Rae GH
Verified Purchase

Good quality... and they really work!

Yes, I recommend this

Bought as a stoking filler for my brother, who gets through socks at a great rate. He reports back that they are a great fit, but more importantly, keep his feet warm!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

02 January 2026Good companion
Verified Purchase

Bought as a Christmas present for my grandson

Yes, I recommend this

I bought these socks for my 15 year old grandson and he loved them

Helpful?

31 December 2025CeliaAllum
Verified Purchase

Great buy

Yes, I recommend this

It’s lovely and warm Keep my tootsies really warm

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

30 December 2025Olovems111
Verified Purchase

Fantastic socks

Yes, I recommend this

Excellent quality nothing else to say / wash well.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

28 December 2025Magenta11
Verified Purchase

Socks.

Yes, I recommend this

My son likes these as they are very comfortable socks during this cold weather. The colour band was very useful for 'pairing'.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

23 December 2025Artichoke13
Verified Purchase

Only ones without a lumpy seam over the toes

They are OK. Not as thick and cosy as ones I’ve bought before. They are also longer up the leg. I bought them because they are the only ones this year without the toe seam.

Helpful?

12 December 2025FuzzyBun
Verified Purchase

Look like good socks

I bought these as a gift. They seem good and I like that they are fairly plain for everyday use. Can't comment further as they're not for me.

Helpful?

12 December 2025hattersfamily
Verified Purchase

Good quality item

Yes, I recommend this

I bought these as a present for my husband good quality and at an affordable price and quick delivery service

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 December 2025Lil85
Verified Purchase

Socks! Look good. A present for someone.

Yes, I recommend this

They came promptly, as they’re a present I can’t give anymore detail.

Helpful?

04 December 2025kagg
Verified Purchase

Great service.

These were bought as a gift so I can't comment on size, comfort etc. Only to say they arrived on time.

Helpful?

04 December 2025lukie
Verified Purchase

comfortable and cosy

Yes, I recommend this

Bought these socks for my husband, he always had cold feed, warm at last.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 December 2025
Verified Purchase

Great quality..

Yes, I recommend this

Great quality. Very comfortable. I like the coloured bands. Keeps a check on wearing out socks.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

28 November 2025Suesuesue
Verified Purchase

Mens heatgen socks

Yes, I recommend this

Great socks , would be nice in other colour beige and black .

Helpful?

26 November 2025RMW2
Verified Purchase

Thin but warm

Yes, I recommend this

I purchased these socks for my husband, who finds them warm & suitable for wear with his smart work shoes & casual shoes too

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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