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M&S Collection

Heatgen™ Maximum Thermal Fleece Top

£20

Colour

Customers say:

Fits true to size()
Size

Customers say:

Fits true to size()
Matching items: Thermal Leggings and Thermal Joggers
Also available in: Tops

Product code: T329225

About this style

Stay cosy, even in the coldest weather, with our Heatgen™ fleece top, featuring our warmest thermal technology yet. It has a high mock neck and long sleeves for extra warmth, while the soft fleece fabric with added stretch ensures a comfortable fit. Heatgen™ technology keeps you warm without the weight, so you can enjoy the chilly season in comfort. M&S Collection: versatile styles in modern shapes with unique and playful details.

Details & care

Item details

Model Height: 5ft8"/172cm

Model is wearing size: 12

Style

Added Stretch

Features

Heatgen™ technology

lightweight and supersoft, designed to keep you warm when the weather gets chilly

Composition

55% acrylic, 37% viscose and 8% elastane (exclusive of trimmings)

Care

Wash at 40°C

Do not bleach

Do not tumble dry

Do not iron

Do not dry clean

Delivery, collection & returns

Delivery

Standard

Free

Nominated Day

£5.99. Order by 7pm for delivery tomorrow

Collection

Collect from store

Order before 9pm for free next-day in-store collection

Returns

UK returns

Free

Exclusions apply

Full delivery and collection informationOur returns policy

Reviews (488)

4.4

66% Recommended this product

Mentions
19 April 2025Mabel
Verified Purchase

Cosy

Cosy and soft and I love the new neckline. I have several Heatgen plus tops and the scoop neck is too low on all of them, except these. Will buy more next winter.

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Moderate warmth

How did it fit?

A bit small

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Moderate warmth

How did it fit?

A bit small

13 April 2025ZOFRAN
Verified Purchase

Not even sewn.

Ive raised complaints on your products and delivery, on acknowledgement, or response.

Helpful?

12 April 2025Happy skier
Verified Purchase

Great for skiwear!

Worm these under a fleece for skiing. They’re brilliant, really add that extra layer of insulation. I have three!

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Average

Comfort

Good

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Average

Comfort

Good

Warmth

Very warm

How did it fit?

True to size

09 April 2025Junie Rose
Verified Purchase

Great quality and comfortable

Bought as a base layer for a trip to Norway, lovely quality, soft and very comfortable kept me very warm

Reviewer Ratings

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Warmth

Very warm

How did it fit?

True to size

29 March 2025Welshtod
Verified Purchase

Don’t bother unless you are tall with long arms !

It’s thin, very long and stretchy - can completely understand why it was in the sale ! Returned !

Reviewer Ratings

Quality

Average

Value for Money

Poor

Style

Poor

Comfort

Average

Warmth

Moderate warmth

How did it fit?

Very large

Helpful?

Reviewer Ratings

Quality

Average

Value for Money

Poor

Style

Poor

Comfort

Average

Warmth

Moderate warmth

How did it fit?

Very large

20 March 2025musik 1
Verified Purchase

Very Warm

Yes, I recommend this

This keeps my core so warm. I do not mind the funny neckline as its so warm to wear in these cold weather.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

17 March 2025Bren 2
Verified Purchase

Warm and cosy

Yes, I recommend this

I am old enough to remember wearing liberty bodices and this reminds me of them. I am also old enough to be on blood thinners and welcome the warm and comforting cosy feel of these thermals. Highly recommend

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

16 March 2025Vally hally
Verified Purchase

Lovely warm and soft

Yes, I recommend this

These tops are great for keeping the winter chill out. I have several now so i can wash and dry some in-between wearing! Prefer the crew neck when its very cold.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

15 March 2025Jen59
Verified Purchase

Good quality

Yes, I recommend this

Bought primarily to wear around the house - much cheaper than putting the thermostat up! A good layering piece for outdoor wear. The only thing that lets it down is the rather strange neck - it can’t really be described as a turtle neck, which I’d prefer.

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Average

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Average

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

12 March 2025SD35
Verified Purchase

Not a fan of the new slash neck on turtleneck

Yes, I recommend this

I have several of the maximum thermals as they’re ideal for keeping warm, although the new neckline on the turtleneck is just a slash neck and not as high.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Good

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Good

Warmth

Very warm

How did it fit?

True to size

12 March 20251Realshopper
Verified Purchase

Functional but not so stylish

It feels really thick and warm but in reality it doesn’t look great. The nick needed to be a little higher.

Reviewer Ratings

Quality

Excellent

Value for Money

Average

Style

Fair

Comfort

Average

Warmth

Warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Average

Style

Fair

Comfort

Average

Warmth

Warm

How did it fit?

True to size

12 March 2025Max thermal turtle neck
Verified Purchase

Great quality

Yes, I recommend this

Lovely product, great quality!! Keeps me really warm on cold days 😊

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

A bit small

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

A bit small

08 March 2025Astrologer

Horrible neckline.

No, I don't recommend this

I have purchased several thermal tops over the last few years, mostly with turtle necks, some with scoop necks. All have been wonderful. I bought this item as I wanted a very warm top for the Winter. The fabric is really cosy..I’m hoping it will wash ok. But the new neckline…it’s horrible!, It just doesn’t sit right, and doesn’t keep the neck warm. I can’t recommend it..if you like a turtle necks…don’t buy this…it’s so disappointing.

Reviewer Ratings

Quality

Average

Value for Money

Average

Style

Poor

Comfort

Poor

Warmth

Very warm

How did it fit?

Very small

Helpful?

Reviewer Ratings

Quality

Average

Value for Money

Average

Style

Poor

Comfort

Poor

Warmth

Very warm

How did it fit?

Very small

08 March 2025HSG8
Verified Purchase

Best thermal top, in my opinion.

Yes, I recommend this

Lovely soft and warm material. Fits well. Washes and dries easily.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

07 March 202521liz21
Verified Purchase

Cosy cosy

I bought this cosy top for golf in the winter but it has a lovely neckline and I have been wearing it for everyday wear as well. So much so I have now bought 5, 2 black, 2 cream and another in a grey pink shade.

Reviewer Ratings

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Warmth

Very warm

How did it fit?

True to size

07 March 2025Taz4uk
Verified Purchase

Great neckline

Yes, I recommend this

Love this top. The new neckline is high but not as much as last year’s funnel neck style.

Helpful?

06 March 2025110H
Verified Purchase

Good quality.

Yes, I recommend this

These heat gen maximum fleece tops are fantastic for layering in the cold weather we’ve been having this winter. Shame they sell out quickly and the heatgen range generally is not what it was. There used to be a heatgen then heatgen plus then heatgen maximum fleece. The turtle necks or roll necks are best but M&S in their wisdom seem to do mostly scoop necks

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Fair

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Fair

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

05 March 2025Carrrie
Verified Purchase

Cozy

Yes, I recommend this

This tip is so cozy. It looks great too. Very good value

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

03 March 2025SurreyMary
Verified Purchase

Cosy!

Yes, I recommend this

Is beautifully warm, but sheds a lot of “fluff” unfortunately

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Very warm

How did it fit?

A bit small

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Very warm

How did it fit?

A bit small

02 March 2025WealthyAwakening
Verified Purchase

Snuggly warm

Yes, I recommend this

Nice warm top. I like the neck style for coverup and extra warmth. I went a size up as I didnt want it too snug. It has washed well

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

A bit small

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

A bit small

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