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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

€18

Colour

Size

Matching items: Thermal Brushed Leggings
Free standard delivery over €75

Reviews (199)

4.7

79% Recommended this product

Mentions
19 March 2026Eveli

Lovely thermal top

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

16 March 2026Rachael Marie

Fantastic quality & fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

14 March 2026Veronica elf

Cosy T-shirt top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely cosy top looks great too ! Love the colour

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

14 March 2026Huffleberen

Thermal top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

13 March 2026A Allen

Medium thermal just right for me

Originally posted on marksandspencer.com (UK)

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

Reviewer Ratings

How do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

11 March 2026GNB

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

11 March 2026mskbakes

Great thermal T-shirt

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

10 March 2026Katsa

Great looking t shirt

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

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

Reviewer Ratings

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

10 March 2026GKCL1

Great thermal/ski gear from M&S

Originally posted on marksandspencer.com (UK)

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 do you feel about the size?

Small

Helpful?

Reviewer Ratings

How do you feel about the size?

Small

09 March 2026Morrowj

Cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Ideal for very cold weather and snow. Great cosy layer.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

06 March 2026Vic1973

Purchased for my elderly mother

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

My mother has numerous tops in various colours, she find them comfortable and they keep her warm. If she goes out it is a base layer or she wears them under a cardigan at home. Good quality, wash well, highly recommend.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

04 March 2026Couple2

Great fitting, warm base layer or top

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Warm, good fit, nice colour, perfect for layering under jumpers when you don't want long sleeved vests but still need a thermal base.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

04 March 2026Vix54321

Love

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Love the thermal range. More colours next year please.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

02 March 2026Bea1306

Comfortable and warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Comfortable and warm - quite a thick material - nice neckline

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

01 March 2026gorrie

Very warm top!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I sent up one size for this top.. Very glad I did as my ordinary size would have been a bit tight. Having said that it is a very warm top and I shall save it for a very cold day!

Reviewer Ratings

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

01 March 2026Ladywirral

Great warmth

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I already have the fabulous long sleeved thermal and this gives me an alternative when wearing tight-sleeved sweaters. I just wish the neckline was lower so it didn’t show

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

28 February 2026Museum4fun

Warm Vest

Originally posted on marksandspencer.com (UK)

Nice warm vest which could be used as a top without covering. A bit snug.

Reviewer Ratings

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

25 February 2026Marine mummy

Good quality thermals

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

A nice and cosy thermal top. Got it on a sparks offer so a good price.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

21 February 2026Dipstick123

Nice t-shirt

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Is a nice t-shirt Good material Washes well Colour hasn’t faded

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

13 February 2026Hanny 21

Warm n Cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Just to add a comfortable, extra layer as I age gracefully

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

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