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M&S

Heatgen™ Maximum Thermal Funnel Neck Top

£25

Colour

Customers say:

Fits a little small()
Size

Free standard delivery over £60

Product code: T329238

About this style

Lock in warmth with this Heatgen™ Maximum thermal top, designed for lightweight layering in cold weather. Made with added stretch, it moves with your body for a smooth, comfortable feel. The funnel neck and half zip offer adjustable coverage, while thumbhole cuffs keep sleeves securely in place and add a sleek, sporty finish. M&S Collection: versatile styles in modern shapes with unique and playful details.

Details & care

Item details

Model Height: 5ft10"/178cm

Model is wearing size: 12

Style

Non padded

Non wired

Added Stretch

Composition

55% acrylic, 37% viscose and 8% elastane

Care

Wash at 40°C

Do not bleach

Do not tumble dry

Do not iron

Do not dry clean

Delivery, collection & returns

Delivery

Standard

UK Standard Delivery is available for £3.99 or free on orders over £60 (excluding furniture).

Nominated Day

UK Next Day Delivery and UK Nominated Day Delivery (excluding Northern Ireland) are available for £5.99 (excluding furniture)

Collection

Collect from store

Store collection is free on all fashion, home and beauty orders.

Returns

UK returns

Free

Exclusions apply

Full delivery and collection informationOur returns policy

Reviews (70)

4.5

77% Recommended this product

Mentions
04 February 2026LadyTT21
Verified Purchase

Cloud soft as a warm cuddle.

Yes, I recommend this

Bought a size up (14) review said it was more fitted. Lovely and warm smart taup colour.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

03 February 2026Edna May
Verified Purchase

Good colour and fit.

Yes, I recommend this

I like the colour of this thermal top- burgundy. It's a change from the black ones that I have and I especially like the thumb hole to keep wrists warm. I've tried it on and it's a good fit but you have to be careful when doing the zip up as it can get stuck if you pull it right up.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 February 2026yoga2302
Verified Purchase

Good quality thermals at last.

I ordered these for walking the dog. They are well made and keep you warm.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 February 2026Nanamoussaka
Verified Purchase

Soft, warm top in a good neutral colour.

Yes, I recommend this

Very warm and soft fabric. Slightly long in the body. I agree with other reviewers that this is a very small fit. I usually take 10-12 in Marks and Spencer tops. I ordered a 14 and it is a very snug fit and I have a small bust! I like the longer sleeves with thumbholes as this is useful for me when out walking. Also it is a relief to have a neckline that isn’t a crew neck (crew is so unflattering for an older neck) and Marks no longer do their versatile scoop necks.

Reviewer Ratings

How did it fit?

Very small

Helpful?

Reviewer Ratings

How did it fit?

Very small

01 February 2026Mela1927
Verified Purchase

Does its job.

Bought as an extra warm up layer. Tight fit but it does its job.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

30 January 2026Rigby200
Verified Purchase

Comfortable and warm!

Yes, I recommend this

comfortable and warm, fleecy on the inside; love it for tennis or just on those cold days

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

29 January 2026Lillylabel
Verified Purchase

Soft and warm

Yes, I recommend this

Lovely and soft and warm, unfortunately I wanted something loser, the arms are tight

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

29 January 2026loveselfies
Verified Purchase

Very useful and cosy for winter.

Yes, I recommend this

A great garment for winter. I particularly like the front zip, funnel neck and the grape colour. I ordered the top on line as it was not stocked in my nearest store.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

27 January 2026BevT2
Verified Purchase

Very warm and comfortable

Yes, I recommend this

Great fit and very warm. Feels good on. I got the burgundy colour and it looks good too.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

26 January 2026AEF
Verified Purchase

Lovely

Yes, I recommend this

Lovely and soft, love the thumb holes, and the zip neck is a nice height. Keeps me nice and warm

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

22 January 2026Poppydoll
Verified Purchase

Stylish and warm

Yes, I recommend this

Runs very small. Love the colour and material though

Reviewer Ratings

How did it fit?

Small

Helpful?

Reviewer Ratings

How did it fit?

Small

22 January 2026Whyme121
Verified Purchase

Maximum warmth

Yes, I recommend this

Really warm & snug, close fitting but fit perfectly under jumpers, etc. Originally purchased 1 but decided to buy 2 more ( taupe is a lovely colour) in case not available next year

Helpful?

22 January 2026
Verified Purchase

Super small sizing

No, I don't recommend this

Bought a size 10 online. Returned in store and selected a 12 and 14 to try. Went home with the 14. I’m easily a size 10 and I could tell this would be too tight as soon as I put my arms in!!

Helpful?

22 January 2026Moffi2
Verified Purchase

Warm and cosy

Yes, I recommend this

Very impressed how soft and warm this top was. I usually buy at 8/10 but after reading the reviews ordered size 12 fits perfect. It is a tight fitting top but does feel very snug on body.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

21 January 2026Annonholiday
Verified Purchase

Good Quality Thermals

Bought this because of the cold spell and it is different to other thermals I have bought from M&S. It is very much an outer wear as apposed to wearing underneath your other clothes. It is also a very tight fit. I sent back but kept the other one I bought that had a zip.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

21 January 2026JenAD22
Verified Purchase

Superb cosy top

Yes, I recommend this

This top is incredibly warm, comfortable and flattering. I did size up a couple of sizes just because I prefer a less skintight look. It is still fitted just not too much. I could literally live in this top. Would love more colours please.

Helpful?

21 January 2026Lily the Pink20
Verified Purchase

Excellent quality

Yes, I recommend this

Love this top. Good base layer or wear it as it is. Size accurate.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

19 January 2026Jennifer MM
Verified Purchase

Warm & flattering

Originally posted on marksandspencer.ie

This is so warm and soft and very flattering. I read the reviews about sizing and went up 2 sizes which gave a perfect fit. I have already ordered another colour as I love it so much. Great for activity or just lounging as long as you want to be warm.

Helpful?

19 January 2026Polly Bisho
Verified Purchase

Great value.

Yes, I recommend this

This to is so warm and comfortable I will definitely be buying ore in other colours. Highly recommend great value for money.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

19 January 2026Pixie 58
Verified Purchase

Cozy With Style

Yes, I recommend this

Great quality, Lovely fit and so cozy. Will buy another set.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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