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M&S Collection

Heatgen™ Medium Thermal Mock Neck Top

€ 22

COLOURBlack
SIZE

Free standard delivery over €50

Product code: T329223

About this style

This long-sleeved top is crafted with our Heatgen™ technology, offering medium-level warmth and exceptional softness. Its added stretch ensures a comfortable fit, making it ideal for layering or wearing on its own. A mock neck adds an extra cosy feel. 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, 39% viscose and 6% 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

Reviews (93)

4.6

65% Recommended this product

Mentions
2025 februar 21MYOB2025

Didn't find the neck comfortable.

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Thought I'd try this style but find this neck isn't for me. I did order the next size up to my usual as a review said they come up small if you order your usual size.

Reviewer Ratings

Quality

Average

Value for Money

Average

Style

Fair

Comfort

Average

Warmth

Moderate warmth

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

Quality

Average

Value for Money

Average

Style

Fair

Comfort

Average

Warmth

Moderate warmth

How do you feel about the size?

A bit small

2025 februar 20Flossie24

Keeps you warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Soft and comfortable. Works well when not too cold

Helpful?

2025 februar 19Alice88

Fitted nicely under a shirt, not too bulky.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Warm and neat neckline and I liked the colour. Good quality and fitted well.

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 161Happyhouse

thermal top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

lovely and warm great as a base layer or on top nice neckline more colours please

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

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

Warm

How do you feel about the size?

True to size

2025 februar 16Kaayvee

Comfy and warm top.

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

An easy to wear warm top for chilly days but the neck is a bit of an odd shape. I think it would have been better as a roll top.

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

2025 februar 16DartmoorDiva

Soft and cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely and soft and warm, just what I wanted. I now own 3 of these tops in different styles and colours.

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

2025 februar 14Kriz1

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Love this, so comfortable and lovely and soft to wear.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Warmth

Warm

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Warmth

Warm

How do you feel about the size?

A bit small

2025 februar 14Swrrll

Great colour

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Sort material lovely and warm to wear nice to layer up under a jumper

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 februar 13angy5

Good quality and good value for the money

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very good feel, comfortable and warm and good value.

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 12FussyB

A medium warmth …

Originally posted on marksandspencer.com (UK)

I’ve M&S Heatgen, Heatgen Plus and I’d say the warmth of this one is in between the two. Gorgeous colour too.

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 11Lesley B 13

Minus 32 degrees and still warm 😉

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Holiday in Canada at minus 32 degrees - didn’t feel cold at all - great thermal long sleeved top

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 februar 10Mum Nan

Cosy top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Absolutely love these tops. Really cosy and fantastic value

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 10Tallulah05

Perfect!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I absolutely love this top. I’ve been using as a base layer while working outdoors and I have definitely been warmer than ever. The high neck is great for extra warmth without being too tight and I like that the sleeves are a little bit long so they don’t ride up under other layers. I found it true to size. And also nice enough to wear just as a top. Will be ordering more of these.

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 10Murdy1

Cosy and warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

A lovely top and for a base layer very stylish. I like the mock turtle neckline a lot. I chose the grey and it turns out be a quite pretty lilac grey. It is also warm and cosy. I think I’ll be buying another one

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Excellent

Comfort

Excellent

Warmth

Warm

How do you feel about the size?

True to size

2025 februar 10LYNN6

Thick and warm

Originally posted on marksandspencer.com (UK)

Lovely thick warm top. Washes and dries quick too.

Helpful?

2025 februar 08ChelseaGirl2025

Long Sleeved Thermal Top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Superbly soft and extremely comfortable. Lovely and warm too. Well made quality top would defo recommend. I went up a size as I didn’t want that ‘sprayed on’ feel or look.

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 07ICCJ

Cosy top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Love this cosy top which looks good under short sleeve tops or long sleeve.

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 06Kim 2025

So cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I purchased two of the turtlenecks online both size 10 but the finish on one was not as good as the other and the size war significantly smaller. I returned it no problem, The remaining one was a super fit and so cosy. I will probably but again but from a store so I can inspect the item.

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Excellent

Comfort

Excellent

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Excellent

Comfort

Excellent

How do you feel about the size?

A bit small

2025 februar 05MUMMYNANA

Lovely & comfortable

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought for cold weather trip to wear under round neck jumper. Mock collar sits just right. Quality is good - material is lovely & soft.

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 februar 05Aliboo65

Stylish and warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Soft and warm. Versatile as can be warm alone or under other tops.

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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