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M&S

2pk Thermal Knee High Socks

£10

Colour

Customers say:

Fits true to size()
Size

Free standard delivery over £60

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.

Details & care

Style

Freshfeet™ technology

Features

Soft and cosy brushed fabric that keeps warmth in

Composition

93% viscose, 6% polyamide and 1% elastane lycra®

Care

Wash at 40°C

Do not bleach

Do not tumble dry

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 (569)

3.7

48% Recommended this product

Mentions
17 February 2026KingsX
Verified Purchase

Okayish

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 did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 February 2026Adnerb 1
Verified Purchase

Comfortable and warm

Yes, I recommend this

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

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 February 2026Janetonly23
Verified Purchase

Comfortable and warm

Yes, I recommend this

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

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

10 February 2026KAMSN
Verified Purchase

Love these thermal socks

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 did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

09 February 2026limonata
Verified Purchase

comfortable to wear

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 did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

08 February 2026Farmer Jo
Verified Purchase

Not a good fit

No, I don't recommend this

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

Reviewer Ratings

How did it fit?

Very large

Helpful?

Reviewer Ratings

How did it fit?

Very large

07 February 2026irfiona
Verified Purchase

Not for a low tox user

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
Verified Purchase

Not a good item

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 did it fit?

Very large

Helpful?

Reviewer Ratings

How did it fit?

Very large

07 February 2026SallyReviews
Verified Purchase

So soft great quality

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 did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 February 2026Kelly47
Verified Purchase

Kept slipping down!!

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 did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 February 2026Ela82
Verified Purchase

They roll down!

No, I don't recommend this

I can't recommend these socks enough for their warmth, however they are very annoying as They roll down! The elastic at the calf is very loose, therefore I can only wear them with leggings, as they hold the socks in place.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

02 February 2026Alisonifloribunda
Verified Purchase

Useless

No, I don't recommend this

I bought a 6-8 W delighted that I had found a sock for a wider leg. For context I’m 5’8” and wear a size 12/14 but do have a hefty leg but not o see by any stretch of the imagination. When I tried on one of these socks I soon discovered that there was minimal stretch in the fabric and they only came up to my mid calf. Extremely disappointed. I gave them to my friend who is 5’ 7”, size 12 and has very skinny legs and they fitted her perfectly. So do t be fooled by the false claim of “W”

Helpful?

31 January 2026ch1234567
Verified Purchase

slippery customers

these look nice and are soft but fall down all the time - I don't have stick thin calves ( I wish!) so that's not why. Wouldn't buy again

Helpful?

31 January 2026Keith Alexander
Verified Purchase

Super

Good value and very comfortable, They are recommendable.

Helpful?

31 January 2026Peasholmparker
Verified Purchase

Disappointing

No, I don't recommend this

These feel soft and cosy, but don't stay up - end up bunching around my ankles

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

25 January 2026I Abbotts
Verified Purchase

A bargain !

Yes, I recommend this

These socks are ideal to keep warm in winter. Good value for money.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

25 January 2026Marcie9
Verified Purchase

Long thermal socks

Yes, I recommend this

Comfortable and warm. Be careful how you dry them though. Left my first pair near a radiator and they shrank!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

24 January 2026FrootBat
Verified Purchase

Too short for knee high

No, I don't recommend this

I like the texture of these socks and they stay up well, but they need to be longer: I am 5'7" tall, and the socks are 3" short of my knee.

Reviewer Ratings

How did it fit?

Small

Helpful?

Reviewer Ratings

How did it fit?

Small

24 January 2026Kittypie456
Verified Purchase

Not so nice knee highs

Not buying these again. The fabric is unpleasant, not soft. They didn’t stay up on me and slid into my shoes.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

24 January 2026wendyredrobin
Verified Purchase

Excellent length

Yes, I recommend this

Fed up of socks that only reach mid calf and leave the rest of your lower leg cold? Well cry no more, these beauties reach your knees and stay up all day and all night, yes I slept in them during the recent cold snap. Warmer and less bulky than hiking socks I've previously layered up with. Toasty toes and calves to put a smile on your face.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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