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Heatgen™ Medium Short Sleeve Thermal Top

Product code: T329220

About this style

This super-soft thermal top is made with Heatgen Plus™ technology for extra warmth without bulk. The round neck and short sleeves create a comfortable base layer, while the brushed interior fabric adds cosiness. Made from material with added stretch for flexibility, this medium warmth top is ideal for chillier days. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

M&S

Heatgen™ Medium Short Sleeve Thermal Top

£14

Colour

Customers say:

Fits true to size()
Size

Matching items: Thermal Brushed Leggings
Free standard delivery over £60

Reviews (211)

4.7

80% Recommended this product

Mentions
25 April 2026Moonlight12
Verified Purchase

Crew neck too high

No, I don't recommend this

Crew neck much higher than winter version. Looks dreadful with open blouses. Keps torso warm but ill considered design for the spring.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 April 2026romeanna
Verified Purchase

I love it!

Yes, I recommend this

It's so warm and cosy - I love it! I'm going to buy another one. The only thing is, the neck is rather high. That's OK if you're wearing it under a top or a jumper with a high neck. But it doesn't work with a lower-cut top or a blouse that isn't buttoned up all the way to the neck.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

04 April 2026Vans L
Verified Purchase

Good layer

Originally posted on marksandspencer.ie

Yes, I recommend this

Bought for teenage daughter for ski layer and she loved it. She didn’t feel sweaty in it and kept her warm perfectly

Helpful?

02 April 2026Pat2026
Verified Purchase

Great quality.

Yes, I recommend this

Bought the wrong size. Manageable all the the same. Thanks

Helpful?

31 March 2026Jenny Angel
Verified Purchase

Feels good when wearing on colder days.

Yes, I recommend this

Very cosy and suitable for colder days. Fits well and fabric is good quality.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

29 March 2026Shan
Verified Purchase

VERY SOFT, VERY WARM, VERY COMFORTABLE

Yes, I recommend this

I am a size 10 and 4’10” tall. I bought two of these in size 18 & size 22. I must mention that I have also bought five T-shirts from M&S in size 18 in 2024 to wear during my holidays abroad, and made a comment as I was so happy. I am a senior citizen and don’t like clothes that cling to my body, as I PREFER COMFORT TO FASHION. So I wear size 18 Thermal Short Sleeve Top for my EXERCISE CLASSES for senior citizens. And I wear size 22 as a PETTICOAT at home under my long dress. They are VERY SOFT, VERY WARM, VERY COMFORTABLE, and made of high quality long lasting material. I have been looking for something like this in many websites for some time, and finally I found it on M&S. I am so grateful to M&S for providing me my exact requirement. Thank you so much.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

28 March 2026JaneSevern
Verified Purchase

So Comfortable

Yes, I recommend this

Love this top, material so soft too. I purchased the cream colour which is a good shade and versatile. Very cosy and useful to wear on cooler Spring days when you don’t want to be in a Jumper. I’ll be purchasing a long sleeve one too.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

24 March 202612Roses
Verified Purchase

Super Soft Great Thermal Wear

Yes, I recommend this

This top is so soft and keeps you warm. You can also wear this under jackets as a top. Lovely quality and wash well. True to size and a great a length.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

24 March 2026fatfeet65
Verified Purchase

Heatgen thermal tee shirt

Yes, I recommend this

Good quality, very soft material and will be useful as a winter layer or under a jacket in the spring/ autumn.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

23 March 2026Kaz G
Verified Purchase

Great quality, fit and easy to wear

Yes, I recommend this

I adore the Heatgen range of tops & vests. This short sleeved black top has a lovely soft feel but not too warm to wear so perfect for those slightly cooler days. They fit snugly and are so comfortable to wear. Great with jeans, trousers or skirts!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

21 March 2026C0ld teacher
Verified Purchase

Life-changing

Yes, I recommend this

I recently discovered the Heat-Gen thermal range and it has changed my life! As someone who is always cold, I used to wear tee-shirts under everything and at least three layers on top of that (jumper, gilet and coat!) But once I started wearing the thermal tops: (long sleeve - winter and short sleeve - spring), I have been snugly, and smugly warm ever since. Thank you.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

19 March 2026Eveli
Verified Purchase

Lovely thermal top

Yes, I recommend this

Lovely soft, comfortable thermal top that feels warm and good to wear under a jumper or even as a top with a cardigan.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

16 March 2026Rachael Marie
Verified Purchase

Fantastic quality & fit

Yes, I recommend this

Love this undershirt. I wear as a pyjama top in the chillier months. Washed well.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 March 2026Veronica elf
Verified Purchase

Cosy T-shirt top

Yes, I recommend this

Lovely cosy top looks great too ! Love the colour

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 March 2026Huffleberen
Verified Purchase

Thermal top

Yes, I recommend this

Lovely, soft fabric. Very warm to wear under shirt Happy with purchase

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 March 2026A Allen
Verified Purchase

Medium thermal just right for me

Nice material lovely and warm got with 20% off sorry I didn't order more when I had the 20% off

Reviewer Ratings

How did it fit?

Small

Helpful?

Reviewer Ratings

How did it fit?

Small

11 March 2026GNB
Verified Purchase

Great quality

Yes, I recommend this

Beautifully soft, warm and comfortable fitting. Would definitely recommend this.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 March 2026mskbakes
Verified Purchase

Great thermal T-shirt

Yes, I recommend this

I wish they’d do these in more colours. So cosy & great to have a crew neck rather than the scoop of the long sleeve version.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

10 March 2026Katsa
Verified Purchase

Great looking t shirt

Yes, I recommend this

Sits very well under cardigans or sweaters. Very soft and warm, snug fitting.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

10 March 2026GKCL1
Verified Purchase

Great thermal/ski gear from M&S

Yes, I recommend this

The thermal range is great for home and away. I have now had to buy for my daughter who lives in the French alps and who is recommending to all her friends and colleagues there!

Reviewer Ratings

How did it fit?

Small

Helpful?

Reviewer Ratings

How did it fit?

Small

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