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2pk Thermal Knee High Socks

M&S

2pk Thermal Knee High Socks

£10

Colour

Size

Free standard delivery over £60

Product code: T609697

About this style

Keep your feet cosy and warm with these thermal knee-high socks from our M&S Collection. Made with innovative Heatgen™ technology, they provide lightweight, supersoft warmth that helps insulate without the bulk. The fabric includes added stretch for comfort and a secure fit that stays in place all day along the long length of the sock. This handy pack includes two pairs of plain socks, perfect for everyday wear during colder months. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

Details & care

Style

Added Stretch

Features

Soft and cosy brushed fabric that keeps warmth in

Composition

57% acrylic, 30% viscose, 12% 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 (114)

4.5

70% Recommended this product

Mentions
27 February 2026Lally20
Verified Purchase

Good quality socks

Good quality, soft and warm knee length socks. Great for wearing in cold weather.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

20 February 2026Elainesed
Verified Purchase

Warm & Comfy

Yes, I recommend this

Warm and comfy knee high socks. Only wish they came in more colours as well as black.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

19 February 2026Sadie lady
Verified Purchase

Toastie

I love these socks, they are fine enough to go into shoes or boots. They stay in place and never slip down even after numerous washes. Great for keeping your legs warmer with the extra layer under trousers.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

11 February 2026Bluelotus456
Verified Purchase

Lovely warm long socks

Yes, I recommend this

These are so comfortable and warm. Long enough to fit under my cycling trousers and I can definitely recommend

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

10 February 2026Louise x
Verified Purchase

So Comfy!!!!

Love these socks. The thermal soles are spongy and soft and soooo comfortable. I’ll be buying more!!

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

04 February 2026DeeHar
Verified Purchase

Toastie Toes

Yes, I recommend this

Perfect for me as replacement for old knee length socks. Would definitely buy again

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

29 January 2026Francesca00
Verified Purchase

Warm and comfortable

Yes, I recommend this

Soft comfortable and warm. Delivered quickly and without issue.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

28 January 2026Slinky Cat
Verified Purchase

Lovely socks

Yes, I recommend this

I bought two pairs and they have been great especially in this cold weather

Helpful?

26 January 2026jackiesmum
Verified Purchase

Disappointed

No, I don't recommend this

I have been looking for knee high socks for a while and thought they were exactly what I wanted but they came up very small and tight

Reviewer Ratings

Comfort

Fair

Helpful?

Reviewer Ratings

Comfort

Fair

25 January 2026selectivelady
Verified Purchase

Warm Knee Socks

Knee socks with thick soles. Good fit length and tops

Reviewer Ratings

Comfort

Good

Helpful?

Reviewer Ratings

Comfort

Good

24 January 2026MaryR8
Verified Purchase

Good quality but too tight at top

No, I don't recommend this

Very warm socks and not too bulky good length however band at top too tight and I have skinny legs!

Helpful?

20 January 202624TED
Verified Purchase

Gamechanger!

Yes, I recommend this

A gamechager under wide leg jeans in winter! Cozy feet and legs all day

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

18 January 2026Blackgomez
Verified Purchase

Warm & comfortable

Yes, I recommend this

Lovely comfortable, warm socks, will definitely be buying again.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

16 January 2026Clarabelle6
Verified Purchase

Great Winter Socks

Yes, I recommend this

Great winter socks. They keep feet and legs warm and cosy, wash well and fit well.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

15 January 2026miriamannie
Verified Purchase

Good quality.

Yes, I recommend this

Quality good. I am a size 5.5 shoe size, so I bought the 6-8 size , so they are slightly longer in the leg, but still ok to wear .

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

13 January 2026Lisawuh
Verified Purchase

Great socks!

Yes, I recommend this

Really warm and actually long enough to reach just below the knee cap… so many are just a bit short and end up slipping down!

Helpful?

11 January 2026PlanetMott
Verified Purchase

Long Mens socks.

Yes, I recommend this

These socks are very good quality and come up to the knee being long socks. They Wash well but do not tumble dry as they shrink. They come as a pack of two and have a soft finish. It’s hard to find good Mens long socks. These are a good buy.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

11 January 2026Keenwalker
Verified Purchase

Disappointing

No, I don't recommend this

Too tight, especially the elastic at the top. Too long and very uncomfortable overall.

Reviewer Ratings

Comfort

Poor

Helpful?

Reviewer Ratings

Comfort

Poor

10 January 2026AP230
Verified Purchase

Nice cosy socks

Yes, I recommend this

Nice cosy socks - and they stay up…might have preferred a more silky texture, but they’re great!

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

08 January 2026JelanaS
Verified Purchase

Nice length and extra padding on soles

Yes, I recommend this

Love the extra padding on soles of these socks, they were a bit snug on the top of legs under the knee. Marks and Spencer please,please bring back the black thick fleece lined socks you did before they are so cosy, comfortable and warm and don’t dig into your legs.

Reviewer Ratings

Comfort

Average

Helpful?

Reviewer Ratings

Comfort

Average

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