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2pk Thermal Knee High Socks

Product code: T609609A

About this style

Keep your feet toasty in colder weather with these thermal knee high socks. Made with added stretch for a comfortable fit that stays in place. The reinforced heel and toe ensure durability, while antibacterial properties keep odours at bay. Comes in a practical pack of two, offering medium warmth for everyday winter wear. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

M&S

2pk Thermal Knee High Socks

€13

Colour

Size

Free standard delivery over €75

Reviews (577)

3.7

48% Recommended this product

25 March 2026Fjordie

Soft and cosy but short

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Feel lovely and soft and very cosy for the winter months but they are definitely not knee high as named. They are more like calf/shin high which feels a bit awkward

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

22 March 2026Cabaret Mumma

Great socks, but shrink terribly!

Originally posted on marksandspencer.com (UK)

I have been buying these socks for some years. They never wear out. But that's because they shrink so much I have to replace them every other winter! I don't wash them too hot, or tumble dry them. They just shrink. I've searched for a replacement, but there isn't one. They're warm and good quality. However, after the second winter, they are literally no good. I'd give them away, but nobody could get their feet in them!

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

17 March 2026Senior customer

Good knee length socks

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Expected them to be warmer, but otherwise just what I wanted. Wish they did more colours, something a bit brighter?

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

16 March 2026chesterminute

Long thermal socks

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

My wife says it's the best thermal socks she has had.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

13 March 2026Lillamina

Lovely socks, they DO fall down eventually though!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely, warm socks. As with all knee highs, they do fall down eventually though so could have a slightly wider, thicker band to keep them up.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

13 March 2026pb38

Warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These socks are a little big usually have size 6 /8 . They feel soft & time will tell if the knee high slowly slip.

Reviewer Ratings

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

10 March 2026Cats5

Great Socks

Originally posted on marksandspencer.com (UK)

Great socks bought to git under jeans. Fit well and stay up.

Helpful?

10 March 2026Pjbob

Socks

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Average only Not as warm as previous pairs Don’t stay up —- wrinkle down

Helpful?

07 March 2026sketcher

soft and warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Nice soft material and they stay up without being too tight.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

06 March 2026Waste of time1

Rubbish

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

I would have given them 0 if I could. Plasticky material and they fall down on first wear so the elastic is also useless. They are not the quality of the previous version of these socks. Don’t bother buying.

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

17 February 2026KingsX

Okayish

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Lovely and soft and warm, not too tight at the top. But they bobble quickly and leave bits on the floor, plus the heel wears out quite quickly.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

14 February 2026Adnerb 1

Comfortable and warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These socks are a great length for keeping you warm and fit well under trousers

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

14 February 2026Janetonly23

Comfortable and warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Warm, soft and ever so comfortable. Just love the wide fit

Reviewer Ratings

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

10 February 2026KAMSN

Love these thermal socks

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Have purchased these thermal socks before and I love them. Good quality and a good fit and at a fair price

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

09 February 2026limonata

comfortable to wear

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

The socks are comfortable and soft to wear, but I wouldn't say they're thermal, they're not actually that warm, because they're too thin.

Reviewer Ratings

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

08 February 2026Farmer Jo

Not a good fit

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Fit is very big Slide down all the time need more elastic in Poor quality

Reviewer Ratings

How do you feel about the size?

Very large

Helpful?

Reviewer Ratings

How do you feel about the size?

Very large

07 February 2026irfiona

Not for a low tox user

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

I had already taken off the label when I realised that these socks were coated in some slimy chemical that is supposed to be anti microbial. I live a low tox life these days so won’t ever be wearing these and feel really annoyed that they did this and made the notification on the label so small I didn’t notice.

Helpful?

07 February 2026Gailsey

Not a good item

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Very large and do not stay up in shoes, or slippers. Do not keep feet warm, thermal is not a good word for them.

Reviewer Ratings

How do you feel about the size?

Very large

Helpful?

Reviewer Ratings

How do you feel about the size?

Very large

07 February 2026SallyReviews

So soft great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Absolutely love these, they are so soft and cosy. Perfect to wear under trousers or a long dress. Good quality.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

06 February 2026Kelly47

Kept slipping down!!

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

I wanted some warm knee length socks to wear with my walking boots for some extra warmth. Right from the start they kept slipping down and ending up around my ankles. Spent the whole walk pulling them back up. Never had this problem before. On the upside they were very warm.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

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