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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

Reviews (1739)

4.6

71% Recommended this product

01 April 2026Seacrab77

Lovely leggings

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely leggings very warm and good quality , a little long

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

30 March 2026R Hogg

Brown thermal leggins.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great leggins, warm and cosy.nice colour for a change.

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

24 March 2026Sinclair10

Great for Winter

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I have 4 pairs of these in different colours and wear them all the time in the winter months. I am a 12/14 and buy a 14 as I don’t like anything too tight. I do think that this latest pair are not as good quality as previous ones, they are thinner and not as fluffy on the inside.

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

23 March 2026Chloe1122

Material bobbles quickly

Originally posted on marksandspencer.com (UK)

The leggings are very soft and comfortable but they bobbled between thighs before the first wash.

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

22 March 2026Guidedogpuppywalker

So warm

Originally posted on marksandspencer.com (UK)

Perfect to use as thermals under trousers and also as tights under a dress. Dual use, who knew eh?

Helpful?

20 March 2026Tamara Sabolevskaya 1

Warm and snug.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I bought one and then I bought another ! as I found them comfortable and cosy for when it was chilly outside. I found them a little large for me in size 10 but maybe I should have got a size 8 however, they are not really baggy but they are also not tight. I like them as I hope you will do too.

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

20 March 2026gononon

Great Waistband

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very easy to wear. I have a stoma and the top of my bag sits on my waist and am always searching for "GOOD" waistbands. These leggings have just the right amount of stretch and a wonderful narrow and easy easy waistband.I will buy the thicker leggings in the autumn.

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

19 March 2026Debba58

Beautifully soft fabric!

Originally posted on marksandspencer.com (UK)

As with the top - such gorgeous soft fabric! Very comfortable under my workwear trousers and warm

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 March 2026Jophe2004

Warm,comfy and cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I always have M and S leggings to wear as thermals over the winter period. I have to keep my legs warm and they are just what I need very comfortable and cosy.

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 March 2026Senior customer

Very cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Toasty warm as expected. Very soft and comfortable

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

16 March 2026Frustratedly

Very Good Quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Fit true to size, warm and comfortable, 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

15 March 2026MGs 1

Smart leggins

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great quality wash and keep shape perfectly I would buy again

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 2026tinathetrout

great thermal leggings

Originally posted on marksandspencer.com (UK)

These are lovely and warm but not too bulky. I have three pairs now

Helpful?

12 March 2026

Cosy & Snug

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I love the leggings. They are a good fit and are lovely and warm.

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 March 2026Morrowj

Ideal layer.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Ideal for where I was going. Good fit and comfortable material.

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 March 2026Bigdogfan123

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought these for light exercise classes during colder months as not a fan of the sporty leggings. They are super comfy and not too thick. I have a few pairs of them they’re my go to leggings - I love this range.

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 202642Anon

Comfortable

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely fabric, soft and comfortable. Easy to 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 March 2026Comfy300

Bought before

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought them before and thought I ought to have one for every day for the winter. They fit well, are not tight, length is fine (I am 5ft 6in) and warm especially when you wear jeans in the winter. Wash 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

05 March 2026Savishopper50

Thermal brushed leggings

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Well … wasn’t keen on taking these with me ,but so glad I did . Kept me so warm under my jeans and trousers ,yet I felt comfy and not over heated and bulky !

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

05 March 2026Gale force 80

Good quality & Price shame about the fit

Originally posted on marksandspencer.com (UK)

These are warm and comfortable but far to long both in the body and leg, this purchase is a smaller size but the same problem, otherwise I would have given 5 stars

Reviewer Ratings

How do you feel about the size?

Very large

Helpful?

Reviewer Ratings

How do you feel about the size?

Very large

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