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M&S Collection

Heatgen™ Medium Fleece Thermal Top

€ 22

€ 8

ColourMid Grey
Out of stock online
Size

Free standard delivery over €50

Product code: T329210

About this style

Stay warm on cooler days with this lightweight Heatgen Plus™ thermal top. Long-sleeved style with added stretch for your best fit. Made from a super-soft brushed fleece for extra warmth and a cosy feel against skin.

Details & care

Item details

Model Height: 5ft10"/177cm

Model is wearing size: 8

Style

Heatgen Plus™: lightweight, supersoft and brushed inside for warmth, designed to keep you warm when the weather gets chilly

Features

Heatgen™ technology

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

Composition

53% viscose, 39% acrylic 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 over €50, or €4.50

Collection

Collect from store

FREE

Returns

Ireland returns

FREE

Exclusions apply

Full delivery and collection informationOur returns policy

Reviews (1720)

4.7

71% Recommended this product

Mentions
2025 februar 21Genvieve

Warm and well fitting.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Always wear M and S thermals in winter. Help to keep me warm and they look good enough to wear as a top.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

2025 februar 17tooldforthis

good quality

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

expecting the top to be warmer than other tops do not find it so

Reviewer Ratings

Quality

Poor

Value for Money

Poor

Style

Excellent

Comfort

Average

Warmth

A little warmth

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Poor

Value for Money

Poor

Style

Excellent

Comfort

Average

Warmth

A little warmth

How do you feel about the size?

True to size

2025 februar 12BrownAM

Perfect for colder temps very comfortable

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Purchased for trip in February to New York. Today was -2 to 3 celsius and this top was very warm, cosy and extremely comfortable. If I needed to I could of taken my jumper off and wore this top on its own. I am 5ft4 size 12 and medium was perfect.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

2025 februar 06Bluecath

Highly reccomended

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Woul highly reccomend these long sleeve tops...they are thin, lightweight, but very cosy and long

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

2025 februar 04Little Pettie

pettie

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

lovely, light weight soft and extra warm, wear them under jumpers in the cold weather also use them for exta layer when out walking not bulky

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

2025 februar 03Natasha74

Lovely top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Keeps me warm & very comfortable, it's quite thick. Good price & delivered quickly.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

2025 januar 31Hodand

Quality cosy practical thermal

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought several, very warm stylish and wash well and dry quickly. Did size one up as very close fitting

Helpful?

2025 januar 30Redskies

Warm and cosy .

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

This vest was perfect for the cold weather we have just had , not bulky so easy to wear under all my clothes and would look good worn as a top .

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

Small

2025 januar 28annrv3

Fabulous

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I have purchased quite a few different tops from the heatgen range, all been fabulous. Really appreciated them in the colder weather. They fit so well, nice and long, and so comfortable. I also think great value

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

A bit large

2025 januar 28Lynette2

Good Fleece Thermal Top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I wear it as an underwear vest which proves as the name says.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

2025 januar 26LMKendall

Super warm top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Super warm top. I absolutely love these base layers. They are extremely warm and long enough to tuck into trousers when wearing a mid layer on top. I will never look anywhere else for a thermal base layer. I am normally size 8/ small but based on previous reviews, went for a medium which was definitely the right decision. Fits perfectly.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

A bit small

2025 januar 25Crazyshopper55

A great find

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I can’t praise this range of thermals enough. This thermal top is my go to at this time of year. It is so warm ,cozy & soft to touch. Can be worn under a layer or on its own as it’s very stylish

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Moderate warmth

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Moderate warmth

How do you feel about the size?

True to size

2025 januar 23EmmaTr

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very soft and comfortable, and of course keeps you warm!

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

2025 januar 21Train70

Very Comfortable

Originally posted on marksandspencer.com (UK)

Lovely and comfortable and keeps you warm on the coldest of days

Helpful?

2025 januar 19TwinklyR

So cosy!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

A very nice cream colour to add to my thermal top collection.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

2025 januar 19ShoppingMadam

Warm cosy thermal top/vest

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Purchased this for my mum who needed to replace some of her ageing thermal underwear. She is very happy with it - says it can be worn as a vest or a top with jogging bottoms around the house. Looks nice on and fits perfectly. Colour is rose quartz which is not really an accurate description. Dark beige is more appropriate and is the colour my mum wanted.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

2025 januar 18Jenny 65

Fabulous thermal top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I love these thermal tops, had some last year and liked them so much ordered another. Very cosy and wash beautifully

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Very warm

How do you feel about the size?

True to size

2025 januar 18

Thicker and tighter than other medium heatgen

Originally posted on marksandspencer.com (UK)

Thicker and tighter than other same size medium heatgen piece, acceptable but better try or know this before

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

A bit small

2025 januar 12Eunice123

Very cosy and warm

Originally posted on marksandspencer.com (UK)

Fabulous tops. Perfect for this weather. They wash well. I now own a stack of them!

Helpful?

2025 januar 11Margaret68

Quality thermal top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely soft quality fleece top.Well made and certainly keep you warm. Great fit and highly recommend it.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

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