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Heatgen™ Medium Thermal Brushed Leggings

Product code: T327300

About this style

Layer up against the winter cold with these Heatgen Plus™ thermal leggings. The Japanese Heatgen™ fabric features a brushed inner layer that traps warmth while keeping the design lightweight and flexible. A stretchy base ensures unrestricted movement, perfect for everyday wear during winter months. The beautifully soft material offers medium warmth without adding bulk under your outerwear. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

M&S

Heatgen™ Medium Thermal Brushed Leggings

€22

Colour

Waist

Free standard delivery over €75, otherwise €4.50

Reviews (1767)

4.6

71% Recommended this product

Mentions
18 September 2026Gracehound

Cosy leggings

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought the navy ones and very happy with the length and fit on the waist. Size 8. I am 5.8. I wear them under my jeans.

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

17 September 2026Cat black

Great purchase !

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Beautiful soft, warm leggings. Good value for money.

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

15 September 2026GeminiMama

Warm & cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These are really warm and comfy. I wear them in the evenings snuggled up in front of the tellly.

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

15 September 2026petunia19

Great Leggings

Originally posted on marksandspencer.com (UK)

Lovely leggings very comfortable and warm, will be a great addition to my wardrobe.

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 September 2026KazM61

Cosy and Warm

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very pleased with my thermal leggings, they’re lovely and soft and warm, I have MS and dislike the cold, nighttime is worst for me in the winter so I actually use these thermals as pyjamas and it works really 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

07 September 2026Clutterbug12

Super cosy

Originally posted on marksandspencer.com (UK)

Not tried on yet but hope they fit the same as last year. Different leg lengths would be good.

Helpful?

07 September 2026Diggersjo

Good quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely fit and warmth, really comfy and don’t go baggy with wear

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 September 2026Ally Jane

Autumn leggings .

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Gorgeous leggings. They are warm but not too hot , beautiful soft good quality fabric. I bought the brown ones and the colour is a warm shade so ideal for Autumn. Length is a little long for me so I turned them over and size is accurate with a decent comfortable waist band . I have since purchased a black pair I’m that impressed. Price is great value for such nice leggings . Well done M&S .

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 September 2026Leggy28

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great quality and fit superb the colour chocolate brown will add finesse to every outfit

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 September 2026Emms74uk

Quality leggings

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Saw these online thought they would be great for the winter haven’t worn them yet but have other m&s leggings they are quality

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

25 August 2026LadySize22

Heatgen Leggings

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Heatgen are my go to leggings for the cooler months. These are the medium brushed weight. They are really good. Wash and wear all winter as they are also really comfortable. The heavier weight are also great:)

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

07 July 2026Hispania

Super soft

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

I really like these leggings they are so soft and the perfect length.

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 June 2026JKiom

Disappointed

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Disappointed with state of leggings on arrival. One pair in cardboard carton, the other pair unboxed and extremely creased.

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

10 June 2026anne_bh

These thermal tops and trousers are amazing

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Purchased top and bottoms for on board cruise wear as lots of gym and sauna activity Absolutely perfect and the elasticity certainly pulls you in nicely giving you a confident look

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 May 2026Bcham

Great leggings

Originally posted on marksandspencer.com (UK)

I recently bought the leggings for yoga I find them really comfortable and good value

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

12 May 2026Matrix11

Perfect

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Absolutely perfect, good quality Washes well Excellent value for money

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 May 2026Steph B93

Amazing thermals - wouldn’t buy any others.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Best thermals ever! So soft on the inside. Warm but breathable. They don’t make you sweaty. I wear them most of the year!

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

09 May 2026A Allen

Nice material

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Hat to go a size up coser but not as warm as I thought they would be perhaps get the extra thermal next year but good quality

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

30 April 20265uzy

Great leggings

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These were really comfortable and fit well. I've got a pair of the heavier weight thermal leggings but I much prefer these - they feel much nicer on. I bought some more to put away for next winter!

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 April 2026RuthU

Marvellous!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great quality and very stretchy which I needed to cover up medical treatment.

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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