Update your browser for a better shopping experience!

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

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.

M&S

Heatgen™ Medium Thermal Crew Neck Top

€22

Colour

Size

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

Reviews (1072)

4.8

81% Recommended this product

Mentions
17 March 20266Mumstheword3

Soft, soft, soft!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Well made and beautifully soft. Nice and warm in cooler days.

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

17 March 2026Soozinkenya

so snug

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought this top for a skiing trip. Fits well true to size and so cozy to wear under tops or jumpers

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 March 2026TJW8

Nice warm top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely and warm. It’s a bit clingy, as I suppose it’s meant to be. I’m pleased I went up one size as I think my usual size would have been a bit too tight.

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

15 March 20263Bs Mum

Fabulous

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I have a few of these in different colours perfect close layer for under sweaters on chilly days

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 March 2026Jadarb

Great product but pricey

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought to go under my work uniform. Is very warm but very expensive

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

14 March 2026Katsa

Soft and Warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Fitted t shirt which keeps cold out. Bought a second one.

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

13 March 2026Bush49

Great top to have

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These tops are so comfortable easy to wear and versitable, i have most of the colours

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

12 March 2026Mollyria

Molly

Originally posted on marksandspencer.com (UK)

Great product. Have several of these, to put under my jumpers. Keeps me warm.

Helpful?

12 March 2026Viv66

Great quality!!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Keeps me lovely & warm at the football as a base layer

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

10 March 2026TeamKris

A bit disappointed

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Bought a medium weight vest but found there’s not much difference thickness wise between that and the maximum. Also I don’t like the crew neck, much prefer a scoop neck which doesn’t show under different necklines. The alternative lightweight vests are paper thin so a lot to think about!

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

10 March 2026Cats5

Warm and Cozy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Again very cosy top. I bought my late friends daughter two for Christmas and the tights as well as she is an artist working outside. I bought her the same last year and she loves them. So do I.

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

10 March 2026Warwick1

Sooo comfy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Looks great under a lightweight jumper for early Spring when weather unpredictable. Lovely soft cream colour. Now have 3! Usually size 12, however always size up one size in thermals.

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

10 March 2026Joam jay

Poor quality

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

The material of this thermal top is poor quality, it snagged on the first wearing and bobbled. I went up a size for a good comfortable fit. Shan’t buy again very disappointed as usually can rely on M&S for quality

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

09 March 2026CARSICK

They last for ages

Originally posted on marksandspencer.com (UK)

Really useful tops, and i wear them from the end of September through until Spring. Theyre really comfy, wash well, and dry quickly too.

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

08 March 2026

Great quality and lovely fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

A really nice garment. Excellent quality, lovely fabric and a good colour. Highly recommended.

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

07 March 2026loveclothes14

Thermal top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

A bit thinner than the last i bought were thicker got extra discount which helps thanks ms

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

07 March 2026Doilie

Best fitting thermal top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I dislike tight clothes so bought this top a size larger but it still looked small. Once I put it on, it wasn't at all uncomfortable. The fabric is soft and warm and the neck seams don't irritate. I bought another one

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

07 March 2026Shopperaddict

Fab

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Purchased the burgundy with 20% off which is a bargain, I’ve now purchased the cream. I sized up and am glad I did as a snug fit but length is good. Really lovely feel to the fabric and so comfy and warm. Ideal as a base layer but also smart to wear as the top layer if preferred. Definitely recommend.

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

07 March 2026J968

Soft and comfortable

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

The top is comfortable and long enough to tuck in to keep the back warm. You can wear it with just a jumper on top to keep snug all day.

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

07 March 2026Margaret Dronfield

Its the quality

Originally posted on marksandspencer.com (UK)

Havent used them yet but am sure they will be as good as the last ones I had. Waiting now for next winter

Helpful?

1 of 179