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M&S

2pk Heatgen™ Maximum Warmth Longer Length Thermal Socks

£14

Colour

Customers say:

Fits true to size()
Size

Free standard delivery over £60

Product code: T104435

About this style

These longer length thermal socks bring warmth to cold conditions with their thick, insulating design. Our innovative Heatgen™ thermo technology works to keep you comfortable when temperatures drop. A fabric combination generates and retains heat for lasting comfort throughout the day, providing extra warmth for your legs. Cut to a long length with a considered stretch, they offer a fit that stays in place all day - perfect for cooler weather and ideal for wearing with boots, they balance practical warmth with everyday style. Comes in a convenient pack of two. M&S Collection: easy-to-wear wardrobe staples that combine classic and contemporary styles.

Maximum warmth for keeping cosy in colder climates.

Details & care

Style

Product Style: Thermal socks

Length 36cm from base of heel top of leg

Added stretch

Features

Heatgen™ technology

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

Composition

54% acrylic, 35% polypropylene, 5% polyamide, 5% polyester 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 (258)

4.5

69% Recommended this product

Mentions
19 November 2025Jeanie777
Verified Purchase

Perfect Socks For the Winter

Yes, I recommend this

My husband loves these socks. As with them being thermal they are especially good for this cold weather

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 November 2025HalotheWynd
Verified Purchase

Extra length socks

Yes, I recommend this

These are quality long socks giving warmth and also some shin protection; however the barbs fitted to hold two pairs together are deeply set and difficult to remove without causing slight damage to the weave.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 November 2025JulieA696
Verified Purchase

Great warm socks

Yes, I recommend this

Nice toastie long socks and great quality as usual from M&S

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 November 2025Cat Mad Lady
Verified Purchase

Fantastic quality

Yes, I recommend this

Bought as present but look great quality, size and warm

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 November 2025Marigoldeastanglia
Verified Purchase

Knee length

Yes, I recommend this

Exactly what my husband asked me to buy him. Good length and they don’t slip down. Washed well

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

05 November 2025Lillypots
Verified Purchase

Cosy feet

Yes, I recommend this

Bought these to try because they are long . And my husband thinks they are a good length and my and warm for the winter.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

03 November 2025Paul NW11
Verified Purchase

Excellent!

Yes, I recommend this

Great quality and value. I will definitely buy them again.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

23 October 2025Diane2410
Verified Purchase

Lovely warm socks

Yes, I recommend this

I bought these socks for my husband, he is very happy with them. They are warm, nice and long, and good quality.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 October 2025letdown2
Verified Purchase

Great Work sicks

Yes, I recommend this

Had these before and they are excellent for construction work, soft, warm and hard wearing.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 October 2025M wilton
Verified Purchase

Lovely quality easy to put on

Yes, I recommend this

Lovely soft and not at all difficult to put on unlike some other brands. Very warm and snug fit

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 April 2025
Verified Purchase

Great quality.

Yes, I recommend this

Lovely and warm. Good length. Material is robust and looks hard weariing.

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

02 March 2025BEW1

Excellent product

Yes, I recommend this

This is the 2nd pair of these socks that I have bought. Very pleased with them, and the efficiency of ordering on-line and collecting item from a local Marks & Spencer food hall.

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 February 2025MyselfinAberdeen
Verified Purchase

Just the job

Yes, I recommend this

I bought these to replace the previous, now worn out.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

27 February 2025Hobbes 2
Verified Purchase

Almost perfect

My husband is quite pleased with these socks but would have liked them about 4cms longer in the leg as that would be more comfortable and they would stay up better ! He finds them a little thick to wear with normal shoes

Reviewer Ratings

Quality

Excellent

Value for Money

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

How did it fit?

True to size

24 February 2025wheelers4
Verified Purchase

Cosy

Yes, I recommend this

Very warm. Love the long length. Does what they say it does

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

20 February 2025Mad54
Verified Purchase

Amazing sox

Yes, I recommend this

They are really warm, stay up and ideal for cycling or just around the house in cold weather

Helpful?

30 January 2025Richard18
Verified Purchase

EXCELLENT LONG SOCKS

Yes, I recommend this

Excellent quality long socks that are really warm & comfortable to wear. I had another pair before this & they lasted a good 3 or 4 years before i needed to buy this replacement pair. WOULD DEFINITELY RECOMMEND.

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

26 January 2025KayEM
Verified Purchase

Long length for warm legs in the colder weather

Yes, I recommend this

I'm told they are a good fit by my husband who complains about short socks.

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

26 January 2025Pgtwo
Verified Purchase

Excellent warmth and comfort

Yes, I recommend this

Lovely warm socks, and the longer length means they are great under wellies.

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

26 January 2025Goksister
Verified Purchase

Toasty Tootsies!

Yes, I recommend this

Is it warm long socks you are looking for? Comfort & warmth? Look no further. This offering from M&S will leave you with toasty tootsies.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

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