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2pk Heatgen™ Thermal Leggings

Product code: T327202

About this style

These thermal leggings from our M&S Collection feature innovative Heatgen™ technology for light warmth without bulk, helping to insulate your body naturally. The fabric offers a beautifully soft and stretchy feel against the skin, while the lightweight design makes them perfect for layering. This convenient pack of two provides everyday warmth with a comfortable fit that moves with you. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

M&S

2pk Heatgen™ Thermal Leggings

£25

Colour

Customers say:

Fits true to size()
Waist

Matching items: Tops and Thermal Short Sleeve Tops
Free standard delivery over £60

Reviews (1125)

4.1

56% Recommended this product

28 March 2026RosieBMW
Verified Purchase

Excellent Thermal leggings

Yes, I recommend this

Excellent so warm and cosy to wear in the cold winter days

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

28 March 2026Janetbak
Verified Purchase

Long lasting don't bag

Yes, I recommend this

Great value and if the ones i have had before they lady for years not to thick so easy to where under jeans etc or instead of tights as they don't pull down like tights

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

27 March 2026Dorl77
Verified Purchase

Very wearable

Yes, I recommend this

Like wearing tights but nicer. Fabric is fine enough to be worn under skirts as tights but addictively warm. Been wearing mine non-stop.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

24 March 2026Littledaredevil
Verified Purchase

Great quality, love them, just want some more

Yes, I recommend this

The thermal leggings are absolutely brilliant but the two pack arrived as a single pair and there were no more of that size I slightly disappointed as I get really cold on early morning walks with the dogs but when I rang marks they refunded half the cost so their after sars service was exceptional but still want to get some more when they have more stock as they are brilliant. Thanks Marks

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

17 March 2026Sofia 55
Verified Purchase

Good quality and very comfortable.

Yes, I recommend this

Bought this item for cold winter days to wear under my jeans. Tried it on, is thin enough and warm enough. It fits well. It’s perfect

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

16 March 2026RedPhoenix
Verified Purchase

Excellent thermal leggings

Yes, I recommend this

I often feel the cold, and these have made such a difference. I wear them under my trousers, and find them comfortable and really help to keep me warm. Highly recommended!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

16 March 2026SooziQoozi
Verified Purchase

Warm leggings

Yes, I recommend this

These legging are fine enough to fit under my trousers for an added layer of warmth.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

15 March 2026DI100
Verified Purchase

Nice

Would have been five stars but they are a bit too fine.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

15 March 2026
Verified Purchase

Warm and soft

Yes, I recommend this

Very nice warm and soft leggings, highly recommended n good quality

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 March 2026Suesm45
Verified Purchase

Great quality!

Yes, I recommend this

Really good product, but why aren't they produced in different lengths? I have to turn up the bottoms. Trousers come in different lengths so why are these produced in only one length.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

12 March 2026May Edgware
Verified Purchase

Cosy leggings.

Yes, I recommend this

I thought the leggings would be fleece lined, but they are not. However, they are warm and fit well and because they are not bulky, I plan on wearing them under jeans/joggers on freezing days next winter.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 March 2026Italian1234
Verified Purchase

Great quality good delivery!

Yes, I recommend this

Purchased for a dear friend in Zambia! Great delivery and packed well!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 March 2026MaryBeeBee
Verified Purchase

Top quality leggings that last and last.

Yes, I recommend this

Extremely comfortable leggings, both lightweight and warm, and not bulky under trousers. I've bought these in previous years so know they wear well. These are the perfect dark navy blue.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

10 March 2026ALANG50
Verified Purchase

Great as an Extra Layer

Yes, I recommend this

These are nice and thin and even fit well under leggings. The extra layer of warmth helps under other trousers however I wouldn’t wear them without another layer on top as they are a little more like tights than leggings. Lovely and soft too.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

09 March 2026Juliebe
Verified Purchase

Could be thicker not so see through

No, I don't recommend this

Fit good but would have liked them to be a bit thicker very see through.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

09 March 2026Suse60
Verified Purchase

Excellent thermals

Yes, I recommend this

Great product and so comfy to wear. Warm but not bulky so easily worn under things. They wash well too.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 March 2026BeauKay
Verified Purchase

Warm, Lightweight and Perfect for Winter Trips

Yes, I recommend this

They’re really lightweight but surprisingly warm, making them great to wear underneath jeans on colder days. I also wore them on their own for relaxing and they were super comfortable. They kept me warm without feeling bulky, so they were ideal for travelling and layering.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 March 2026Shile
Verified Purchase

Heatgen thermal leggings

Comfortable and light weight. Sufficient to keep legs warm.

Helpful?

03 March 2026TorJ
Verified Purchase

Thin material

They do what they are supposed to do but the material is thin. No idea how they are supposed to be thermal when you can nearly see through them.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 March 2026Mcmartinee
Verified Purchase

Thin

No, I don't recommend this

I was very disappointed with the quality I couldn’t return them as I had torn the wrapping

Helpful?

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