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M&S Collection

Heatgen™ Medium Thermal Long Sleeve Tops

£20

Colour

Customers say:

Fits true to size()
Size

Customers say:

Fits true to size()
Also available in: Short Sleeve and Long Johns
Free standard delivery on orders over £60

Product code: T148813N

About this style

We've made this medium-warmth, cotton-blend thermal vest extra soft on skin, so you can feel cosy on chilly days. Regular fit style with a stretchy ribbed neck for a better fit. Made with compact-spun fabric for warmth and supersoft seams for maximum comfort. Insulating brushed back cotton ideal for wearing in cold conditions. Our clever Heatgen™ technology uses an innovative fibre blend, helping your body to generate and retain heat so you can stay warm when the weather gets chilly.

Medium warmth for wrapping up in moderately cold conditions.

Details & care

Style

Regular fit

Features

Thermal

Soft and cosy brushed fabric that keeps warmth in

Heatgen™ technology

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

Composition

50% cotton, 26% polyester and 24% viscose (exclusive of trimmings)

Care

Wash at 40°C

Do not bleach

Tumble dry medium temperature

Iron at medium temperature

Do not dry clean

Delivery, collection & returns

Delivery

Standard

Free over £60, or £3.99

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 (981)

4.7

69% Recommended this product

Mentions
21 March 2025Junemuriel
Verified Purchase

Great quality

Yes, I recommend this

This garment is brilliant - nice and snug in the colder weather

Reviewer Ratings

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

17 March 2025cornedbeef
Verified Purchase

Good quality & comfortable

Yes, I recommend this

Comfy and warm. Easy wash with no ironing required. Only slight negative is that after several wears the material pils under the chin.

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Good

How did it fit?

True to size

11 March 2025North Yorkshire lad
Verified Purchase

Stylish

Yes, I recommend this

Stylish and does what its supposed to, albeit the sleeves are a tad short.

Reviewer Ratings

Quality

Good

Value for Money

Average

Style

Excellent

How did it fit?

A bit small

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Average

Style

Excellent

How did it fit?

A bit small

04 March 2025lisaminelli
Verified Purchase

Warm as Toast

Yes, I recommend this

Husband loves the extra warmth, without being bulky.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

How did it fit?

True to size

27 February 2025Barrieboy
Verified Purchase

Good quality thermal wear…

Yes, I recommend this

Good service from M&S. Have now got 3 sets of their long johns. Happy with their price & quality.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

26 February 2025Medusa52
Verified Purchase

Warm top

Yes, I recommend this

Needed a warmer top for my pyjamas and accidentally picked mens

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

A bit large

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

A bit large

25 February 2025DeeDeeOxford
Verified Purchase

Cosy and warm.

Yes, I recommend this

Have bought the Heatgen light weight ones in the past which I thought were just thermals and meant to keep you warm. The medium ones are much better. No comparison to the lightweight ones. The medium keep my husband warm and has a cosy feel. A bit costly at £20 each but I'm guessing they'll last a while. As two thermal leggings and two vests would be £80 which is a lot for underwear.

Reviewer Ratings

Quality

Excellent

Value for Money

Average

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Average

Style

Good

How did it fit?

True to size

24 February 2025Hillside Annie
Verified Purchase

So comfortable - Like a warm second skin.

Yes, I recommend this

My partner said he felt as thought he wasn't wearing thermals because they are so soft, lightweight and comfortable. Like a second skin, and very warm.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

24 February 2025Steve J D
Verified Purchase

Excellent quality

Yes, I recommend this

Excellent quality, I now have 6! Ideal for motorcyclists in the winter.

Reviewer Ratings

Value for Money

Good

Style

Good

How did it fit?

Very small

Helpful?

Reviewer Ratings

Value for Money

Good

Style

Good

How did it fit?

Very small

23 February 2025HILLY48
Verified Purchase

Heatgen TOPS

Yes, I recommend this

Bought for my hubby who is housebound, they keep him nice and warm, wash well and last a good few years.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

20 February 2025The Amazing Mrs P
Verified Purchase

Mum knows best!

A wonderful product. My son said that it kept him lovely and snug on a recent holiday to Prague. I told him that M&S was the best!

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Average

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Average

How did it fit?

True to size

19 February 2025TPryme
Verified Purchase

Soft and warm.

Yes, I recommend this

Soft and warm with a good length for tucking in. I had the teal one bought for me and liked it so much that I bought the grey one.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

19 February 2025Marylu59
Verified Purchase

Good quality

Yes, I recommend this

Nice fit great quality very comfortable nice and warm

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

16 February 2025AnnWales
Verified Purchase

Top product

Excellent thermal, true to size, better fit than ladies as nice and long. Size small mens fits 14 to 16 ladies.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

16 February 2025Missy mo
Verified Purchase

Great quality thermals

Yes, I recommend this

Great quality thermal. Buy M&S thermals time and time again for all the family. Can't beat them.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

16 February 2025VegieGal
Verified Purchase

Welcomed warmth

Yes, I recommend this

The feel is perfect against the skin as the fabric is so soft. Purchased for a friend who says he is keeping toasty, outdoor work.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

15 February 2025SewingSusie34
Verified Purchase

Cosy warmth.

Yes, I recommend this

Lovely soft cotton and the green is a bit different. It’s only been tried on but very comfortable and both the length and arm length are just right.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

10 February 2025N Wilcock
Verified Purchase

Good fit and warm.

Yes, I recommend this

I normally buy M&S light thermal tops but these are a better fit and warmer for winter months. I also like that they are longer in length like the light thermal tops so they don't end up half way up your back when bending over.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

08 February 2025Contented grandma
Verified Purchase

Nice and cosy

My husband liked this so much that I bought another. Used as a bed top or a vest. Beautifully warm and comfortable.

Helpful?

07 February 2025Laid back grafter 67
Verified Purchase

Good product

Yes, I recommend this

As advertised i.e. medium toasty and very soft and comfortable

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

How did it fit?

True to size

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