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Heatgen™ Maximum Thermal Crew Neck Top

Product code: T329258

About this style

This thermal top uses Heatgen™ Maximum technology to deliver the highest level of warmth in the range, making it well suited to the coldest days. Finished with a crew neck and long sleeves, it has a fleece feel with added stretch that moves comfortably with the body.It sits close to the skin as a base layer, ready to wear under jumpers and coats from M&S.

M&S

Heatgen™ Maximum Thermal Crew Neck Top

€29

Colour

Size

Free standard delivery over €75, otherwise €4.50

Reviews (11)

4.3

55% Recommended this product

09 October 2026MummyB100

Comfy & Cosy!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I bought 2 new maximum thermal tops this autumn, in aubergine and chocolate, they are a staple item in my winter wardrobe, very soft and warm, I think a slightly longer length this year which I like.

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 October 2026Roskins

Very thick thermal long sleeve top!

Originally posted on marksandspencer.com (UK)

Thermal long sleeve top, far too high neckline! Uncomfortable

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

08 October 20268yellowhoneybees

Best thermal top. A good buy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Comfortable, warm, lovely colours the aubergine and claret. Will wear it as a top not an under garment but they come up rather small so think about the next size up.

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

08 October 2026Ellie 27

Warm tops

Originally posted on marksandspencer.com (UK)

Fantastic tops lovely and warm for upcoming weather, ideal. Ordered the small, previously ordered the medium but sleeves too long. I really wish Marks and Spencer’s would review length of sleeves as this is the third top I have had to return simply because sleeve lengths are far too long.

Helpful?

08 October 2026Holiday2017

Great thermal

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great style and fit and feels soft and cosy to touch

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 October 2026Simply impish

So snug in the winter.

Originally posted on marksandspencer.com (UK)

I would have given 5 stars but I found the neck to be rather tight. Fabric is soft and snuggly, haven’t washed this garment yet but shoul wash well going on previous years .

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 October 2026

Maximum thermal top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Excellent quality,washes well,I have many of these tops,super 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

05 October 2026Northeastmum

Winter is coming

Originally posted on marksandspencer.com (UK)

Ordered in the pale blue when it arrived it’s more like a dirty/ grey blue so I was disappointed with the colour but it will be warm and I tend to wear it under a shirt etc so it will be fine. True to size bought a 10

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

02 October 2026papillon7

Good quality winter thermals

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Im not sure what im reviewing here ? Whether its the top or leggings. Both are very warm. Good quality

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

02 October 2026Topcat15

Ideal for winter layering

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lightweight, easy to wash and dry and lovely to wear. Although this garment is thermal it is not bulky and fits nicely under knitwear and tops. It is old be nice in other colours but otherwise I’m very happy and have bought them regularly in one style or another over the years.

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

01 October 2026Ghosted

Crap

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Really disappointed in quality and melt scarring across the chest of the top. Needed for a trip near arctic circle

Helpful?

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