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Heatgen™ Maximum Thermal Funnel Neck Top

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

M&S

Heatgen™ Maximum Thermal Funnel Neck Top

€33

Colour

Size

Free standard delivery over €75

Reviews (151)

4.4

75% Recommended this product

Mentions
05 May 2026Weiner

Value for money.

Originally posted on marksandspencer.com (UK)

Comfortable and warm. Will save for colder weather

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

04 May 2026Atlantic Sea Kayaking

Max thermal funnel neck top

Yes, I recommend this

I will be wearing this top in Greenland next week and hope it keeps me warm!

Helpful?

09 April 2026J12DC

Comfortable

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Not as warm as I thought or hoped this would be. Will revert to tried and tested companies for technical wear.

Reviewer Ratings

How do you feel about the size?

Very small

Helpful?

Reviewer Ratings

How do you feel about the size?

Very small

04 April 2026Lesley218

Cosy for winter

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Just what I was looking for to keep me warm. Purchased a size bigger as didn't want it to tight. Lovely colour too.

Helpful?

01 April 202650 plus shopper

Great top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Extremely warm and comfy, have 3 in different 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

29 March 2026rquipp

Lovely material

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very cosy and lovely to touch. Nice colour too. Fits to size.

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

23 March 2026Ti19

Warmy funnel neck

Originally posted on marksandspencer.com (UK)

Bought this for my mum, on a size 12 (as she normally wears medium), it was to tight on her, ended up trying it on and it does fit on me :o -normally i wear 8 on tops (small size). I'd definitely say its super warm and comfortable, soft material, no tags on the neck (normally causes me lots of stress) which is perfect.

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

21 March 2026Jpatric

Soft and warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very soft and warm against the skin. Excellent fit nice and thin.

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

20 March 2026volders

Warm thermal

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely and warm, cosy around the neck. Colours lovely 🥰

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

19 March 2026Debba58

Beautifully soft and comfortable thermal wear!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely and soft. I bought a size 14 and I’m just under 12stone and 5ft 6” so 14 is a lovely close fit. My only issue is the zip has been seen really badly so when I zipped it all the way up it got stuck and took mr a good hour to undo it! Poor quality sewing. I would however say the shape of the collar is extremely flattering - love it!

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

18 March 2026jeanpull

Super soft

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very comfortable and looks good with the joggers. Great value in sale.

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

17 March 2026Ninjoe

I went up a size still quite small , may return.?

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Good but small, warm and cosy great for under sweaters but I should have gone up 2 sizes

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

16 March 2026Nataliekwbeiwnbw

Runs very small

Originally posted on marksandspencer.com (UK)

Nice top but runs very small - I’m a size 12 and couldn’t physically get it on.

Helpful?

15 March 2026Hamish57

Great item but size up

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

I had to go up three sizes to get the right fit. Really comfortable and warm.

Helpful?

14 March 2026LazyLou2

If you feel the cold, this is for you

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I buy these tops for the purpose of keeping cosy in the UK's unpredictable weather. They're smart too which is a bonus.

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 2026SMC2001

Wish I could buy again

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Excellent product great design I tried to buy it again along with the leggings but it was sold out the taupe colour great under other clothes

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 2026CocoV

Warm and Cozy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Loving this line of Heatgen thermal tops. They fit tight so great for layering. More colors please and I’ll buy the whole line I enjoy them that much!

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 2026

Teeny tiny disappointment

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Absolutely tiny. Probably need to size up two sizes. Now on sale so no chance to exchange.

Helpful?

13 March 2026Leeds528

Lovely warm top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely warm top will be great for really cold weather

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

13 March 2026AnniePStr

Smart Comfortable Top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

This thermal top is well made and extremely warm. I love the style and, as previous reviewers have said, it is on the small size. I am a size 8, this size was snug, I then order in size 10 which was more in keeping with the photo shown. If you an in-between size I would definitely go up a size.

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

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