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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

£22

Colour

Customers say:

Fits a little small()
Size

Free standard delivery over £75, otherwise from £3.99

Reviews (26)

4.5

65% Recommended this product

22 October 2026tina43
Verified Purchase

Thermal Crew Neck Top

Yes, I recommend this

Now the cold weather has started I bought it in black as I already have it in cream, certainly does the job of keeping me warm.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

22 October 2026Jackie56
Verified Purchase

Great but small

Excellent thickness and warmth. Dropped a star because the sizing is wrong. I am a size 12 and ordered a medium. Far too tight. Have ordered 3 more in the large size.

Helpful?

22 October 2026Jyccyj
Verified Purchase

Perfect for the cold weather

Yes, I recommend this

I rely on M&S thermals to get me through the Winter. The Maximum are for when it’s really cold. Lovely fit. Sleeves and body length are perfect.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

21 October 2026Hedley452
Verified Purchase

Lovely top

Yes, I recommend this

These tips are lovely, warm and good quality. Wearable under clothes or as a normal top. I have numerous tops in different colours.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

20 October 2026Liz Gra
Verified Purchase

Thermal vests

I have worn these for some years as I live on a hill and walk my dog. The added warmth is great

Helpful?

19 October 2026LyndsayJ
Verified Purchase

Snuggly but tight necked

Yes, I recommend this

Bought this, having bought a black one last winter and loving it. This is really warm and feels great, except I find the crew neck uncomfortably tight, also meaning it can't be worn under other tops unless they are fairly high-necked. I looked for a scoop necked version but they only seem to be available in the thinner version. I don't have a thick neck, so can only assume others might find the same issue.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

18 October 2026Morag71
Verified Purchase

Fantastically warm and comfortable top

Yes, I recommend this

Brilliantly warm, great for colder days and nights. I have them in black and cream and they are constantly washed and worn.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 October 2026wugso
Verified Purchase

A must for the cold weather!

I have so many of these in different colours and of varying thermal strengths. They are wonderful for layering as the weather gets colder. Cannot do without them now! Good quality. Good value and dry quickly after a wash.

Helpful?

16 October 2026Mary Brown
Verified Purchase

Excellent and just love and highly recommend

Yes, I recommend this

I bought last year and as a very cold person - cosy

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

15 October 2026Beekeeper21
Verified Purchase

Warm and good quality

Yes, I recommend this

Nicely sized (I got the large based on what others had said), very warm and good quality

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

15 October 2026Indigolady
Verified Purchase

Heatgen maximum thermal crew neck

Yes, I recommend this

Really good warm thermal vest which can also be used as a top. Nice colours this year, I bought the claret and the dark aubergine. They only down side is the sizing - very small so need to go up a size and then still a close fit. M & S you need to sort this problem out and maybe go back to actual sizes.

Reviewer Ratings

How did it fit?

Very small

Helpful?

Reviewer Ratings

How did it fit?

Very small

14 October 2026MMO 75
Verified Purchase

A lovely item

Yes, I recommend this

They come in my xs size which was nice to find. The colours are lovely too. They really are thicker than the other weights but not at all bulky. A great and warm find much needed in the Scottish Highlands.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 October 2026chrissue
Verified Purchase

Warm

No, I don't recommend this

Thermal, yes but way too thick, tight and uncomfortable.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

13 October 2026Mrs B70
Verified Purchase

Heathen Maximum Thermal Crew Neck Top

Yes, I recommend this

I'm so 😄 with this thermal top as it is a perfect fit for me. I ordered a medium size (as I'm a 12) and it fits really snug for a base layer. It's a lovely soft material and I'm assuming it will be really warm. I haven't worn or washed it yet but I'm sure it will be fine.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 October 2026SharonD66
Verified Purchase

Feel good and warm

Yes, I recommend this

Love this item I wear it under tops to layer up and keep me warm as I feel the cold .

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

09 October 2026MummyB100
Verified Purchase

Comfy & Cosy!

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 did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

09 October 2026Roskins
Verified Purchase

Very thick thermal long sleeve top!

Thermal long sleeve top, far too high neckline! Uncomfortable

Reviewer Ratings

How did it fit?

Small

Helpful?

Reviewer Ratings

How did it fit?

Small

08 October 20268yellowhoneybees
Verified Purchase

Best thermal top. A good buy

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 did it fit?

Small

Helpful?

Reviewer Ratings

How did it fit?

Small

08 October 2026Ellie 27
Verified Purchase

Warm tops

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
Verified Purchase

Great thermal

Yes, I recommend this

Great style and fit and feels soft and cosy to touch

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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