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M&S

Heatgen™ Medium Thermal Mock Neck Top

£17

Colour

Customers say:

Fits true to size()
Size

Free standard delivery over £60

Product code: T329223

About this style

This long-sleeved top is crafted with our Heatgen™ technology, offering medium-level warmth and exceptional softness. Its added stretch ensures a comfortable fit, making it ideal for layering or wearing on its own. A mock neck adds an extra cosy feel. M&S Collection: versatile styles in modern shapes with unique and playful details.

Details & care

Item details

Model Height: 5ft8"/172cm

Model is wearing size: 8

Style

Added Stretch

Features

Heatgen™ technology

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

Composition

55% acrylic, 39% viscose and 6% elastane (exclusive of trimmings)

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 (128)

4.7

66% Recommended this product

Mentions
09 November 2025CeliaTee
Verified Purchase

Comfy & warm top

Yes, I recommend this

Warm and stretchy. Very comfy - can be worn on its own or as thermal underwear

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 November 2025cricketlover
Verified Purchase

excellent top

Yes, I recommend this

good quality top with nice top shape, option to wear with a second jumper in colder weather

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 November 2025Sandie78
Verified Purchase

Great buy

Yes, I recommend this

The product is brilliant. Luxurious feeling and economical.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

31 October 2025Lilyonthepond
Verified Purchase

Lovely top., but didn't like the neck.

No, I don't recommend this

Bought this last year& loved it, so ordered another 1, but didn't like the neck on this year's. It feels unfinished & and doesn't sit well. Think I'd be messing with it all the time.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

31 October 2025Redblue22
Verified Purchase

Lovely to wear

Yes, I recommend this

Like the neck , lovely and warm bought my usual size needs to fit snug to keep you warm , good thickness but not overly perfect for me.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

30 October 2025AshleyRose
Verified Purchase

These are wonderful, lightweight, and oh so cosy.

Yes, I recommend this

I have had a couple of these in grey for a few years, they are so cosy, and can be worn under a fleece top or jumper. I was delighted to purchase them in black too. I'd highly recommend them.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

29 October 2025Happybee21
Verified Purchase

Lovely warmth

Yes, I recommend this

I bought this as I needed another one to add to my wardrobe. I love these tops - great to keep warm on colder days. Wash well.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

27 October 2025WAGGY8
Verified Purchase

Just what I wanted and great quality!

Yes, I recommend this

This thermal top was just what I wanted. It’s a good neutral colour and I can wear it as an under layer to keep me warm in winter.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

27 October 2025Anne from morpeth
Verified Purchase

Happy shopper

Ordered two of these fabulously warm vests greay quality

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

26 October 2025Glossopgal1
Verified Purchase

Keeps me warm!

Yes, I recommend this

Great. Keeps me lovely and warm and the neck line is more of a 'slash neck rather than mock neck. The only issue seems to be that you get a lot of 'bobbling' of the fabric where you upper arms rub against the body of the garment. It is almost brushed inside of the fabric and the fibres seem to come to the outside.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

25 October 2025Barnlake Lady
Verified Purchase

Fab top but size up

Fab top and warm - excellent quality but I would suggest sizing up - I love the neck line and bought it in a number of colours - greta for layering

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

23 October 2025Rolo Diva
Verified Purchase

Deliciously comfy

Originally posted on marksandspencer.ie

Yes, I recommend this

Warm cosy ultra soft base layer which equally looks lovely on its own

Helpful?

18 October 2025Anon1971
Verified Purchase

Perfect Thermal

Yes, I recommend this

I’ve reviewed almost every thermal style and bought almost every colour. These thermals are superb quality and truly keep you warm. I work in a freezing portacabin and days off are outside all day with dogs. Lovely warmth without needing bulky layers

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 October 2025Dulas
Verified Purchase

Warm & cosy

Yes, I recommend this

The thermal top was bought to ensure warmth throughout the winter & it will certainly do that. It fits well under blouses & jumpers & state looking neat.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

13 October 2025J Marten
Verified Purchase

ideal for winter

Yes, I recommend this

This garment is my go to in place of a vest. I wear something else on top but the stylish collar lends style to the whole efffect

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 October 2025Jude0101
Verified Purchase

Cosy!

I bought this top in a taupe colour and have worn it several times under a jumper. I like the neckline very much and it is very cosy with the brushed lining. I will probably get another in the same colour as I get very chilly in the winter and under a sweater it will be great.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 October 2025Jean59
Verified Purchase

Get ready for winter

Yes, I recommend this

A good quality garment. I shall wear it under loose jumpers and blouses during the winter.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

07 October 2025TPGMargaret
Verified Purchase

Great Thermal Mock Neck Top

Yes, I recommend this

I read good reviews of this thermal top, so with winter approaching I thought I'd try one. I'm glad I did because it's fantastic and fits perfectly. As to the neck, which some reviewers were unsure about, I think it's absolutelyfine and just what I expected. Overall, I'd highly recommend this top.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 October 2025SB4
Verified Purchase

Inconsistent sizing. Sized up also to a size 16

Came up smaller than taupe version. Such a shame I have to order two sizes of each colour every time

Helpful?

04 October 2025Ssala
Verified Purchase

Good quality

Lovely warm top. Fits beautifully. The cream colour is very attractive and will go with very many things.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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