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M&S

3pk Heatgen™ Light Thermal Socks

£12

Colour

Customers say:

Fits true to size()
Size

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 (321)

4.4

67% Recommended this product

Mentions
16 October 2025RRJD
Verified Purchase

Thermal socks: excellent and a bargain

Yes, I recommend this

I bought these socks because they are thermal and they work extremely well and at £4 a pair are an excellent bargain

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

12 October 2025YD20010
Verified Purchase

Comfortable Socks

Yes, I recommend this

A nice, comfortable pair of socks, reasonably priced.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

09 October 2025dmt62
Verified Purchase

A great purchase

Yes, I recommend this

Beautifully warm but fine grade socks. Unlike other heavy thermals they leave shoe space to wriggle your toes.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 October 2025openspaceman
Verified Purchase

Warmer than cotton

Yes, I recommend this

Bought these for the colder months as replacement for my usual M&S cotton soft tops. They certainly help to keep feet warmer though in the really cold months I think I’ll be upgrading to the thicker version

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

03 October 2025Jocky6721
Verified Purchase

Nice cosy socks.

Yes, I recommend this

Nice socks. Good feel and fit. Keeps feet nice and cosy

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 September 2025Foulis1
Verified Purchase

3PKG Heatgen socks

Arrived on promised date - much finer material than I expected for thermals but they are comfortable ,fit well and warm. Very pleased with them and would recommend them.

Helpful?

16 March 2025Violetpiano
Verified Purchase

Excellent quality

Yes, I recommend this

Great quality and very comfortable. Perfect for all year around use even though they are thermal socks.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Average

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Average

How did it fit?

True to size

12 March 2025Herbgirl
Verified Purchase

First Class Socks.

Yes, I recommend this

Bought for my husband. His favourite socks. Very comfortable to wear, warm but not too hot.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

06 March 2025Ri54
Verified Purchase

A quality pack of socks

Yes, I recommend this

Bought a second pack for my husband who really likes these

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

05 March 2025Mommy7
Verified Purchase

Amazing socks

My son loves them and they are the only socks he wants to wear.

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Excellent

How did it fit?

True to size

24 February 2025Fingertips64

Great socks

Yes, I recommend this

I do a little extra present for everyone at Xmas on Boxing Day & attach via raffle tickets to crackers I’ve made myself. As the men I bought these for are middle aged to elderly & go to football matches I thought these would be ideal to wear on match days as the weather gets warmer. They are lightly thermal instead of the heavier thermal ones they usually wear. Haven’t had any feed back yet but I’m sure it will be good as they all wear M&S socks normally.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

14 February 2025Leriux
Verified Purchase

Great socks for warm feet

Great socks very silky material really keeps my husbands feet war

Helpful?

12 February 2025Allanbrae
Verified Purchase

Very effective

Good to have effective thermal socks which are also light and do not result in a tight fit in my shoes

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

07 February 2025Wagon64
Verified Purchase

Light men’s thermal socks

Yes, I recommend this

Not really thermal socks more summer socks would not really recommend

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Good

How did it fit?

True to size

05 February 2025Bodington53
Verified Purchase

Great winter socks

Yes, I recommend this

Excellent socks, very warm but remarkably thin! As warm as the best thick Nordic socks that cost a lot more. Equally at home in a shoe or a boot, smart or casual. No more cold feet , well worth the money

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

30 January 2025wingdolly
Verified Purchase

Definitely warmer for colder weather

Yes, I recommend this

I bought these for myself as M&S don’t seem to make this thickness of Heatgen socks for women any more. I’m a size 6 and after washing/tumbling they fit nicely. Only gripe is, the elastic in the top can give way very easily. They still stay up but not as well. I like the material - very slightly thicker than a cotton sock but not bulky like most thermal socks.

Reviewer Ratings

Quality

Good

Value for Money

Fair

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Fair

29 January 2025FM23
Verified Purchase

Love these socks!

Bought for my teenage son. Gorgeous quality, really soft and the only socks I’ve found that fit his size 12 feet.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

28 January 2025Caron3
Verified Purchase

Fine knit thermal socks that really work!

Yes, I recommend this

Brilliant, a lightweight, fine knit sock with thermal capacity. Much more comfortable than usual thick thermal socks and well priced.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

27 January 2025Panmureboy
Verified Purchase

Cosy warm winter socks

Yes, I recommend this

These are good. A small improvement on ordinary socks and not too thick and cumbersome. Good value too.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

27 January 2025kaylou6
Verified Purchase

Perfect

Yes, I recommend this

Thin enough for two pairs, but thick and warm enough to be worn alone. Kept my son's feet warm and toasty whilst we walked round a chilly, snow covered New York!

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

How did it fit?

True to size

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