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M&S

Heatgen™ Medium Thermal Crew Neck Top

£17

Colour

Customers say:

Fits true to size()
Size

Matching items: Thermal Leggings
Free standard delivery over £60

Product code: T329222

About this style

When it's time to pile on the layers, this medium-rated thermal top delivers the perfect balance of warmth and comfort. Our innovative Heatgen™ technology creates a lightweight and supersoft fabric that keeps you warm when the weather gets chilly. Added stretch ensures a flexible fit that moves with you. M&S Collection: versatile styles in modern shapes with unique and playful details.

Details & care

Item details

Model is wearing size: 12

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 (471)

4.8

79% Recommended this product

Mentions
14 November 2025Anguscat1
Verified Purchase

Stay warm with these.

Yes, I recommend this

I would be lost every winter without these wonderful thermal tops.I now have several in various colours.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 November 2025trendymum
Verified Purchase

Love these!

Yes, I recommend this

Have bought these medium thermals for the last few years but always been in scoop neck. So glad to see crews neck this year. So warm and comfy. Last forever..

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 November 2025Lennie81
Verified Purchase

Something had changed. Very disappointed.

No, I don't recommend this

I’ve raved about the M&S Heatgen tops for years because I have many and they have lasted wash after wash, year after year. Until now! Something has changed and I’m not happy. I’ve purchased 7 tops over the past month and worn 3. Each of them, after one wear, at the end of my work day, have bobbled. Just one wear! Poor quality. I will now be buying anymore and will try another recommended retailer.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 November 2025Migs43
Verified Purchase

Cosy

Yes, I recommend this

Updating my thermal tops and these are just right to keep me cosy and warm as the weather changes.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 November 2025antwanette
Verified Purchase

Quality top/ vest

Yes, I recommend this

Lovely thermal top got a couple from a few years ago and still as new ,nicecto have a different colour

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 November 2025Bristol Lass
Verified Purchase

Fantastic new product

I had stopped buying heatgem thermals as the necklines were too gaping but love it now they are making crew neck. I have several of the really thick ones but this medium weight one still has a lovely fleece lining but is not so bulky. Excellent addition to the range. I am a long time M&S thermals fan and have hundreds from the old days when they made lots of different colours and stripes too. I had recently stopped buying them as the neck was too exposed. Delighted when I saw these and am back to buying these again. Thank you M&S

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 November 2025Cosy56
Verified Purchase

Cosy and Warm

Yes, I recommend this

Lovely warm and cosy thermal top. Wash very well and keep great shape. I’ve bought in many colours but wish this medium weight crew was also in navy.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 November 2025Martha12
Verified Purchase

Well made and nice and long in the body.

Yes, I recommend this

Brilliant , warm and snuggy long in the body so no draughts sneaking in!!

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

10 November 2025Starburst1
Verified Purchase

Thermal Crew

Nice fabric but quite a boxy shape… needs to be longer (especially in the arms).

Helpful?

10 November 2025Linda shops
Verified Purchase

Highly recommended

Yes, I recommend this

Really warm - perfect under jumpers - I might even sleep in it

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 November 2025Hurlings
Verified Purchase

Comfy, warm tops

Yes, I recommend this

Ideal these to go under jumpers when really cold or simply worn as a top.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 November 2025J Vaughan
Verified Purchase

Really good top for the cold weather.

Originally posted on marksandspencer.ie

This top is quite fitted therefore is very comfortable under knitwear or a sweatshirt.

Helpful?

10 November 2025Pippa71000
Verified Purchase

Great value for money

Yes, I recommend this

I buy a lot of these. Amazing value for money and wash nicely without shrinkage or fade

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

09 November 2025Sparrow56
Verified Purchase

Other brands

Yes, I recommend this

Not as good as Uniqlo on price & quality but convenient to pick up in store

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

09 November 2025
Verified Purchase

Best thermal underwear ever

Yes, I recommend this

I bought two of these medium-weight thermal as base layers for cold weather and they are so luxurious feeling that I don’t want to take them off. I told my older female relatives about this brand because they sit a lot and get cold. It’s cheaper to put on these clothes than to pay for heating bills.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 November 2025Grannieannie22
Verified Purchase

Great quality and warmth

Yes, I recommend this

This is the 1st time I have bought the medium thermal warmth and though obviously thinner than the maximum tops still nice and warm and pretty enough to wear as a top rather than a,vest. More colours please

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 November 2025Jacqjax
Verified Purchase

Lovely Thermal Top

Yes, I recommend this

This makes a perfect outfit not just for wearing under clothing, but also with the matching leggings

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 November 2025Gael6
Verified Purchase

Perfect cosy thermal layering

Yes, I recommend this

Very happy with the fabric, size and style of this cosy thermal wear. Can be worn wither as layering or on its own. I bought the heavier weight leggings to match and together a perfect basewear fir the cold weather.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 November 2025Lindsey Pindsey
Verified Purchase

Great base layer thermal top

Yes, I recommend this

This is a really warm thermal top. You need to choose when you wear it as you could be very hot. I wear mine rowing with nothing else on top after we have warmed up. It is so cosy!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

08 November 2025lilyesque333
Verified Purchase

What’s not to like?

Yes, I recommend this

Adore these Heatgen tops. Have bought in every colour. Perfect to wear under sweaters in the cold and frosty weather.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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