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M&S Collection

Heatgen™ Maximum Thermal Fleece Leggings

£20

Colour

Customers say:

Fits true to size()
Size

Customers say:

Fits true to size()
Matching items: Thermal Top and Thermal Fleece Top
Also available in: Thermal Fleece Joggers

Product code: T327303

About this style

These thermal leggings are lined with fleece for a super-cosy feel. They feature our Heatgen™ maximum warmth technology which effectively traps body heat to keep you warm and cosy. Plenty of added stretch means they move with you for a comfortable fit. M&S Collection: versatile styles in modern shapes with unique and playful details.

Details & care

Item details

Model Height: 5ft8"/172cm

Model is wearing size: 12

Style

Added Stretch

Features

Heatgen™ technology

lightweight and supersoft, designed to keep you warm when the weather gets chilly

Composition

55% acrylic, 37% viscose and 8% elastane (exclusive of trimmings)

Care

Wash at 40°C

Do not bleach

Do not tumble dry

Do not iron

Do not dry clean

Delivery, collection & returns

Delivery

Standard

Free. We are currently experiencing longer delivery lead times.

Nominated Day

£5.99. We are currently experiencing longer delivery lead times.

Collection

Collect from store

We are currently experiencing longer delivery lead times.

Returns

UK returns

Free

Exclusions apply

Full delivery and collection informationOur returns policy

Reviews (549)

4.7

72% Recommended this product

Mentions
23 April 2025Brill on the hill
Verified Purchase

The perfect thermals!

Yes, I recommend this

Great thermal leggings! Soft material, warm and long enough for a change! Bonus- not shiny after washing!

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

How did it fit?

True to size

20 April 2025Matron2011
Verified Purchase

Lovely leggings - nice and warm

Yes, I recommend this

Very soft and comfortable and warm. Would recommend.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

01 April 2025LauraMaca
Verified Purchase

Heatgen thermal leggings

Very cosy just what I was looking for but miles too long for a normal person.

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

Large

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

Large

01 April 2025CosyJo
Verified Purchase

Great quality thermals

No, I don't recommend this

These are my favourite thermal leggings. I wear them under dresses and even as pyjama bottoms.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Warm

How did it fit?

True to size

22 March 2025Nagumo
Verified Purchase

Cosy, winter thermals.

Yes, I recommend this

Warm cosy thermal leggings, wear under looser jeans for dog walking. Great for keeping my legs warm on those winter walks. They are a bit too thick to wear under skinny jeans, have a couple of the light weigh pairs fot that.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

20 March 2025Shilvya
Verified Purchase

Great warmth

Perfect fitting and love these heatgen tops they are lovely and warm, as I feel the cold more. I wear them at home and for outings

Reviewer Ratings

Warmth

Warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Warmth

Warm

How did it fit?

True to size

20 March 2025FrequentVisitor
Verified Purchase

Warm and comfortable

Good quality - wish M&S made these in brighter colours.

Reviewer Ratings

Comfort

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Comfort

Excellent

How did it fit?

True to size

19 March 2025dillondog1
Verified Purchase

Very warm

Thick quality and very warm but very long ,petite option would be preferable .They also feel too big for me,size 8.l have also bought some fleece lined footless tights size 8 which are very warm too,but l would say these are more of a size 6 and are very short. I think M and S should take a look at their sizing.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

Very large

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

Very large

17 March 2025cornedbeef
Verified Purchase

Warm but could be comfier

No, I don't recommend this

Warm but seams very big internally which stick in the legs

Reviewer Ratings

Quality

Average

Value for Money

Good

Style

Average

Comfort

Average

Warmth

Moderate warmth

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Average

Value for Money

Good

Style

Average

Comfort

Average

Warmth

Moderate warmth

How did it fit?

True to size

14 March 2025L1zzy72
Verified Purchase

Warm at subzero

Yes, I recommend this

Bought these for a recent trip to Iceland - they did not disappoint and kept me warm in the subzero temperatures

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

A bit large

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

A bit large

12 March 2025akascrummymummy
Verified Purchase

Cosy soft & comfortable

Yes, I recommend this

Cosy, soft and comfortable leggings, a little long

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

A bit large

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

A bit large

11 March 2025samwonderfulmother
Verified Purchase

Cosy leggings but bit long

Yes, I recommend this

Cosy leggings bought in sale. Would have preferred a choice of lengths as they're a bit long for me at 5.4 but just turn bottom up so kept them.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Moderate warmth

How did it fit?

A bit large

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Moderate warmth

How did it fit?

A bit large

09 March 2025Bunny5girl
Verified Purchase

Superb leggings

Yes, I recommend this

Fantastic! Keep me nice and warm and very soft. Highly recommened!

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

07 March 2025Gaye21
Verified Purchase

Disappointed

No, I don't recommend this

Disappointed with the Heatgen Maximum Thermal Leggings. Thought they would be alot warmer. Have worn them, so not sure if i can take them back.

Reviewer Ratings

Quality

Poor

Value for Money

Fair

Style

Average

Comfort

Average

Warmth

No warmth

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Poor

Value for Money

Fair

Style

Average

Comfort

Average

Warmth

No warmth

How did it fit?

True to size

04 March 2025SaraB3
Verified Purchase

Very comfy

Yes, I recommend this

Have bought another pair they were so comfy and warm

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Very warm

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

Comfort

Excellent

Warmth

Very warm

03 March 2025shropshirelass66
Verified Purchase

Perfect warm leggings

Yes, I recommend this

Soft and comfortable. Very happy with quality, fit and comfort.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

01 March 2025Fab fatter over 40
Verified Purchase

Toasty top

Yes, I recommend this

Bought for daughter’s trip to Iceland. This was her favourite top!! Kept her toasty.

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

A bit large

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Good

Comfort

Excellent

Warmth

Warm

How did it fit?

A bit large

28 February 2025IbizaPetite
Verified Purchase

Super Cosy and Warm

Yes, I recommend this

These leggings are super cosy and warm but also light weight. I put them under my tracksuit bottoms and/waterproof trousers when doing my volunteer job at the Tower of London to keep me nice and warm when outside.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

Comfort

Excellent

Warmth

Very warm

How did it fit?

True to size

28 February 2025LisaWig
Verified Purchase

Great leggings. Sadly colour runs when washed.

Yes, I recommend this

Great leggings. Nice & warm. Sadly colour runs when washed.

Reviewer Ratings

Quality

Average

Value for Money

Average

Style

Excellent

Comfort

Excellent

Warmth

Warm

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Average

Value for Money

Average

Style

Excellent

Comfort

Excellent

Warmth

Warm

How did it fit?

True to size

26 February 2025Dreamingorchids
Verified Purchase

Size 12 leggings in size 18 packaging

No, I don't recommend this

I bought these to go on holiday and as I already had a pair just discarded the packaging. Once on holiday I unpacked them and the size 18 leggings I had ordered turned out to be a size 12 pair so I cannot tell you if they were any good as they do not fit me and as I have no packaging to prove what I bought I just had to do without.

Helpful?

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