Update your browser for a better shopping experience!

Get faster load times, stronger security and access to all features.

M&S

3pk Thermal Trainer Liners™

£10

Colour

Size

Free standard delivery over £60

Product code: T607405

About this style

Keep feet cosy in chilly weather with these thermal Trainer Liners™. This handy three-pack is made from lightweight, supersoft fabric with Heatgen™ technology that helps retain warmth. The material includes added stretch for all-day comfort, while the trainer liner design sits discreetly in your footwear for a sleek look. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

Details & care

Style

Added Stretch

Composition

60% acrylic, 29% viscose, 10% 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 (27)

4.4

78% Recommended this product

Mentions
28 October 2025Hippychick54
Verified Purchase

Socks for me

Yes, I recommend this

I have an ankle injury and cannot wear ankle socks at present ...these little beauties are so warm and fit perfectly

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

20 October 2025Jalco10
Verified Purchase

Best winter weight socks

Yes, I recommend this

These are the best winter weight trainer socks ever. Keep your feet warm and toasty!!

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

06 October 2025Tattianna
Verified Purchase

Grest Trainer liners

Yes, I recommend this

Really good thermal trainer liners well made very comfortable and a great price.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

05 October 2025Gangsternan21
Verified Purchase

Warm sports socks

Yes, I recommend this

Bought these last year so warm in the winter months , sparks offer bonus

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

02 October 2025janew90
Verified Purchase

Quality warm socks

Yes, I recommend this

But these every winter they work well for me and wash good

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

03 April 2025anoncat
Verified Purchase

Quality trainer sock

Yes, I recommend this

Excellent trainer socks. Like the thickness and they wear so well. Been buying them for many years.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

31 March 2025styleright
Verified Purchase

Thermal socks

Yes, I recommend this

I have bought these socks several times and wasn’t disappointed this time round. They are so comfortable to wear to the gym, wear and wash well and are very good value for money.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Comfort

Excellent

How did it fit?

True to size

26 March 2025Aninna
Verified Purchase

Thermal liners

This is my third buy of the thermal trainers liners. After a few washes the black fluff goes. At the beginning it is annoying but they stop. They are good quality and keep me warm during the winter.

Helpful?

12 March 2025manhattangirl
Verified Purchase

Great socks, very soft

Yes, I recommend this

Great socks, very warm and comfy. soft material and fit well

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Comfort

Excellent

How did it fit?

True to size

13 February 2025Lall11
Verified Purchase

Great quality

Yes, I recommend this

I really like this socks really comfortable and cosy

Reviewer Ratings

Quality

Good

Value for Money

Excellent

Style

Good

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Excellent

Style

Good

Comfort

Excellent

How did it fit?

True to size

09 February 2025A1C1
Verified Purchase

So soft and warm

Yes, I recommend this

Love these trainer liners, good quality, warm as well, glad they are back

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

26 January 2025HILLY48
Verified Purchase

Warm trainer liners

Yes, I recommend this

Just the job to wear with boots or trainers, keep feet nice and warm, wash well.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

04 January 2025Cezza3
Verified Purchase

Soft and comfy

Yes, I recommend this

I’m a 5 and they only just fit. Very soft and nice to wear although they do slip off when wearing looser footwear

Reviewer Ratings

Quality

Good

Value for Money

Average

Style

Average

Comfort

Good

How did it fit?

A bit small

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Average

Style

Average

Comfort

Good

How did it fit?

A bit small

04 January 2025SRR9
Verified Purchase

Warm Socks

Yes, I recommend this

Warm thermal socks, keeps your feet warm when outdoors in cold weather.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

31 December 2024DeeDee13
Verified Purchase

Toasty warm

Yes, I recommend this

Bought these first last year and have invested in a few more pairs this year. They do exactly what they say thermal lovely and toasty

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

How did it fit?

True to size

30 December 2024
Verified Purchase

Waste of money!

No, I don't recommend this

Great concept awful execution. They slip down in every pair of trainers I wear, no matter the shoe they end up half way down my foot!

Reviewer Ratings

Quality

Poor

Value for Money

Poor

Style

Poor

Comfort

Poor

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Poor

Value for Money

Poor

Style

Poor

Comfort

Poor

How did it fit?

True to size

27 December 2024Rednib
Verified Purchase

Great quality

Yes, I recommend this

These socks are so comfortable and warm. I’m a size 3 and they fit me well and also prevent my feet from getting cols

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

23 December 2024Ellie Ch 50
Verified Purchase

Love these socks

Yes, I recommend this

I have several pairs of these sock. So warm and comfortable. Worn under tights in really cold weather.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

19 December 2024Dollybean
Verified Purchase

Poor fit

No, I don't recommend this

Poor fitting ,despite being warm. The socks move around in the trainer

Reviewer Ratings

Quality

Poor

Value for Money

Poor

Style

Poor

Comfort

Poor

How did it fit?

A bit large

Helpful?

Reviewer Ratings

Quality

Poor

Value for Money

Poor

Style

Poor

Comfort

Poor

How did it fit?

A bit large

13 December 2024Hollyhollylou
Verified Purchase

Great

Yes, I recommend this

Great to keep feet warm. Nice fit. Thick and durable.

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

1 of 5