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Heatgen™ Medium Thermal Crew Neck Top

Product code: T329268

About this style

Stay cosy on chilly days with this long-sleeved thermal top. It's great for layering under other clothes and features a neat crew neck and added stretch for all-day comfort. Crafted with Heatgen™ Medium technology, it offers warmth while remaining lightweight and is made from supersoft fabric for a premium feel. M&S Collection: versatile styles in modern shapes with unique and playful details.

M&S

Heatgen™ Medium Thermal Crew Neck Top

€22

Colour

Size

Free standard delivery over €75, otherwise €4.50

Reviews (5)

4.2

100% Recommended this product

28 September 2026Ethelflower

Perfect apart from the bobbling

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I typically wear a size 6 top from M&S so I ordered size XS. However, this was uncomfortably tight and restrictive, so I reordered a size S. This fits perfectly. The top is very soft, very stretchy and very warm. The only negative is that the fabric started to bobble after just 2 wears. I am still happy with it and will keep it; I'll just give it a once-over with my de-bobbler as needed.

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

21 September 2026A Allen

Lovely material and very cozy.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I bought two tops and two pairs of leggings the sizing for me is not right and they are doing medium, large, large extra in some of these thermal leggings and tops now instead of sizes I was going to reorder but will have lost the 20% off. so returned the hole order I will purchase again at later date

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

01 September 2026Glamorous at 60

Love the heatgen...hate the size change

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Have had heatgens for years and I love the crew neck ones especially. I am normally 10 to 12 size but preferred to get a size 14 in heatgens so not quite as clingy. Now I tried medium because of new sizing but that was a bit clingy so ended up with large in the end. That is actually 16 to 18....crazy!

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 August 2026linzhod

not quite right

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

IT was the aubergine one I bought to add to my walking collection. fabric not as good as previous seasons as it feels too silky and almost slimy to the touch. I will wait until I receive the matching leggings before I make the final decision as to whether to keep them or not..

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

30 August 20268yellowhoneybees

Very good buy, lovely colour

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good to wear just as a top not an under garment. Warm and comfortable. Love the colour, a lovely dark burgundy or aubergine. Very pleased might buy another.

Reviewer Ratings

How do you feel about the size?

Large

Helpful?

Reviewer Ratings

How do you feel about the size?

Large