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Heatgen™ Medium Thermal Crew Neck Top

Product code: T329222

About this style

This medium-rated thermal long sleeve base shirt features innovative Heatgen™ technology for superb warmth without bulk. The lightweight, supersoft fabric retains heat while the added stretch ensures comfort and flexibility as you move. With a classic crew neck, it creates the perfect foundation for winter layering while the smooth fit sits neatly under additional garments. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

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

M&S

Heatgen™ Medium Thermal Crew Neck Top

€22

Colour

Size

Matching items: Thermal Brushed Leggings
Free standard delivery over €75

Reviews (1108)

4.8

81% Recommended this product

Mentions
09 June 2026Hewlands7

Great product!

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Great product! Warm and cozy. Easy to wash and dry. Very snug fit…suggest get next size up!

Reviewer Ratings

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

31 May 2026ColetteF

Lovely cosy top

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

I love the feel and cosiness of these thermal tops, they are perfect for wearing in the house on cold days, but preferred the lower neck line of the previous ones I have

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

25 May 2026Ang989

Thermal wear top

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Great product. Material lovely, soft and has some give to it. This product will keep you warm in the cooler weather. Do this product in three colours all of which are nice. Good price for a quality product.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

23 May 2026Szuan33

Cosy warm top.

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Wonderful cosy warm top, perfect when the days have gone cooler, good length.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

22 May 2026barbaraanne

Love this top

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

I already have this lovely top in another colour. It is very comfortable, feels good on. Easily washed and dried.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

19 May 2026Jude1964

Lovely cosy fleece vest

Originally posted on marksandspencer.mom (UK)

Lovely thick warm cosy fabric, fits well, nice chocolate brown colour

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

15 May 2026110H

Good value

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Bought it for physio sessions but also wear it under jumpers to keep me warm.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

13 May 2026Crumbsdad

Cosy layering top

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Staple wear for wearing as layers. Wash well. Good colours. Come up very small.

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

11 May 2026bracknellbabe

Cruise wear

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Bought to take on cruise to the Fjords as it seems to be layers is the thing to wear. Hopefully they fit the bill.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

09 May 2026Cesira

Super soft and warm

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Love this item sooo much that after trying out one ,I bought another 4! 2 long sleeve and 2 short sleeve.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

09 May 2026A Allen

Good quality

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

How to go two sizes up as I don't like anything tight lovely material nice and warm

Reviewer Ratings

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

29 April 2026Ellejee

Ladies thermal tops.

Originally posted on marksandspencer.mom (UK)

A litle snug, but good arm and body length. Unfortunately thicker than I would prefer for a layering thermal top.

Helpful?

27 April 2026anne_bh

A go to winter essential

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

I love these well fitted great quality thermal tops Since loosing a lot of weight I now feel the cold and these tops have been so helpful More colours would be appreciated

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

25 April 2026Chrissbb

Excellent fit and really comfortable.

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

So lovely and warm just right for winter and spring. Excellent material which does not come off on skin.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

19 April 2026LostScot

Just what I needed

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Good quality but I’m taking no chances - it’s NEVER going in tumble dryer. I’m fed up with M&S items shrinking!!

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

19 April 2026sugarplumb

Poor service

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

I was looking so forward to receiving this garment as I already have several of these which are fabulous tops warm , and wash well the quality is excellent but I was so disappointed upon opening this top as I had ordered a brown one my account shows I ordered a brown one the cardboard sleeve which the top was packed in even said in clear letters BROWN but the top is a very nice cream colour how disappointing also it is plain to see that something is amiss with this order as the top itself was scrunched up and forced into the sleeve almost as though the person packing this garment could easily tell the cream top should not be packed in that sleeve ,I could not bring myself to make the journey to a M&S store it is a great effort for me being disabled my gripe really is about the mistake I like millions of others through out the world are absolutly crushed with having to rectify the careless service that we are subjected to us from many different angles I’m a very unsatisfied customer at this present time .

Helpful?

16 April 2026Nefertina44

Great shape & cosy

Originally posted on marksandspencer.mom (UK)

I don’t wear this for as undergarment but as a really cosy top with my jeans/trousers and also under my ‘walking jacket’! Great value too!

Helpful?

16 April 2026L4dyB1rdF3rn

Lovely and warm

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Fit is perfect, very soft and comfortable. Very happy with the colour.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

16 April 2026Ilovehorses31

Lovely warm and useful tops

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

I have these tops in many colours. I wear them most days with trousers and pinafores. They look particularly nice paired with trousers of the same colour. They are warm and wash extremely well. Every time i see a new colour i buy it. I i have tried different necklines but my favourite is the crew neck.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

13 April 2026Faye27

So comfortable

Originally posted on marksandspencer.mom (UK)

Yes, I recommend this

Material is nice and stretchy and did the job of keeping me warm. I will say it did bobble after the first wear but this is more of a layering piece for me so not a major problem. Also because I got the cream it was a little bit see through but if you have a nude bra it wouldn’t be seen.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

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