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3 Pack Heatgen™ Light Thermal Socks

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.

M&S

3 Pack Heatgen™ Light Thermal Socks

€16

Colour

Out of stock online

Size

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Free standard delivery over €75, otherwise €4.50

Reviews (386)

4.4

68% Recommended this product

Mentions
09 November 2026Cabbageharassedmum

Thin thermal socks

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

My husband wanted warm socks that were thin enough to fit into his shoes, He likes these.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

06 November 2026Ben212

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very happy with the quality, feel warm enough for me they are quite long in length but not a problem for me

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

03 November 2026Simon W 234

Comfortable and light

Originally posted on marksandspencer.com (UK)

Light Thermal Socks, the emphasis should be on light, but they are very comfortable and warm enough with the outside temperature swinging around +10 degrees C.

Reviewer Ratings

Value for Money

Excellent

Helpful?

Reviewer Ratings

Value for Money

Excellent

25 October 2026MrBlueyezz

Great Quality…

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

They are great quality as with most M&S clothing. They are rather big and slightly baggy not very elasticated around the ankle area. As for the thermal technology within the socks not too bad but they don’t keep my feet totally warm!

Reviewer Ratings

How do you feel about the size?

A bit large

Value for Money

Good

Style

Excellent

Material

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

Value for Money

Good

Style

Excellent

Material

Good

23 October 2026lunajett

New favourite socks!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

So lush and cosy. Not too hot they make your feet sweat. Really soft and comfortable on my feet

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

23 October 2026Reephamshopper

Cold feet!

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Hubby says dispite these fitting well & comfortable to wear his feet do not warm up whichbis a shame.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Average

Style

Good

Material

Average

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Average

Style

Good

Material

Average

04 October 2026Hitchin

Great comfortable socks.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I have had three sets of these socks. They are so comfortable and soft. They wash so well. I am a female and I buy these socks in the smallest size because the legs come up longer for when I wear trousers.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

16 September 2026KP2468

Good quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These socks are great for daily wear and they stay up

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

13 September 2026Galute

Heatgen socks

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These were bought for my husband who has had several pairs of these previously. He especially likes them because they are very soft and this is maintained after washing, and also the tops are not too tight to accommodate swollen ankles.

Reviewer Ratings

How do you feel about the size?

Large

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

Large

Value for Money

Excellent

Style

Excellent

Material

Excellent

18 August 2026Private Lokfan

Light Thermal Socks

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Got some of these socks as a present last year and was really impressed with them. I have found them to be extremely comfortable to wear, some of the best socks I have ever worn.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Good

Material

Excellent

21 July 2026Masothy

Excellent quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought these 4 times now,for my husband they are very comfortable he says

Helpful?

18 June 2026Leizel

Great Quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I have many Heatgen pairs of socks The new ones don't go to the top of my calf like the others do

Reviewer Ratings

How do you feel about the size?

A bit small

Style

Average

Material

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

Style

Average

Material

Good

20 May 2026PaulaGold

Lovely cosy sock

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely soft comfortable material feet felt warm and fresh

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

13 April 2026Jeremy62

Very comfortable

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I've bought several pairs, less for the "heat gen" aspect and more because they are so comfortable and don't bunch-up under my feet while wearing shoes.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Average

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Average

Material

Excellent

22 March 2026heide

plain and useful for work

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These socks are nice to wear with black shoes and a business suit. I buy this type of socks quite frequently. They were out fairly quickly as they are for everyday wear.

Reviewer Ratings

How do you feel about the size?

A bit large

Value for Money

Average

Style

Average

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

Value for Money

Average

Style

Average

Material

Excellent

18 March 2026123 warm

Superb

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

very very good best I've worn in along time, easy to put on and sot abd comfortable

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

16 March 2026johnell

Nice socks but delivery time is horrendous

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These are nice socks but why does it take a week to arrive at store for collection

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Average

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Average

Material

Excellent

10 March 2026Phil72

Excellent

Originally posted on marksandspencer.com (UK)

These sock are perfect in every way. Soft stretchy and comfortable.

Helpful?

07 March 2026TimothyR

Great - comfortable and do the job well

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These socks are comfortable and provide good warmth for their thickness (normal) and remain comfortable and easy to put on wash after wash

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

04 March 2026Jimbob53

Well made.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Handy pack of thermal socks. I bought them as l suffer from chilblains. The socks seemed to help keeping my feet warm, shortening the the attack.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

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