Update your browser for a better shopping experience!

Get faster load times, stronger security and access to all features.

2 Pack Heatgen™ Thermal Leggings (2-14 Yrs)

Product code: T714003T

About this style

An M&S 2 pack of thermal leggings has a soft, brushed feel that helps keep warmth in. The Heatgen™ innovation is designed to give medium warmth on cold days. They're easy to layer comfortably under trousers or a skirt.

M&S

Online only

2 Pack Heatgen™ Thermal Leggings (2-14 Yrs)

€17

Colour

Waist

Free standard delivery over €75, otherwise €4.50

Reviews (82)

4.8

87% Recommended this product

Mentions
10 November 2026Jx21

Comfy and Cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Would buy again as very comfortable and warm so does the job.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Average

Material

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Average

Material

Good

06 November 2026angie4363elvis

Very cosy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very cosy, great sizing, excellant quality. Value for money

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

05 November 2026TashaCo

Warm & Comfy layering

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Layering up with M&S thermal vest and thermal leggings have been essential to keeping my child comfortable in the colder month. The material is also light but thick enough, with a soft feel on the body. We bought black thermal leggings and they can even be worn on their own like trousers.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

04 November 2026JDP1982

Lovely quality.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These are lovely and warm while still being lite enough to note bulky. My son loves the feel of them under his clothes, we get them every winter.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

03 November 2026Zab90

Great 👍

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great clothing ideal for cold winter days, highly recommended 👌

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

02 November 2026J261

Warm but baggy

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

The fabric is warm and seems the same as the long sleeve kids thermal vests so I’m happy with this aspect. However, I bought these so my child could wear them as a base layer on cold days but they are far too loose and baggy for that. I did not expect the loose fit as they are described as leggings.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Average

Style

Fair

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Average

Style

Fair

Material

Excellent

22 October 2026Hj2106

Soft

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

My son loves these they are soft and coy and fit him really well

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

15 October 2026Mandar Patil

Nice material and fit .Nice click to collect pro

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very nice fit and good material for my kid with M&S

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Good

Style

Good

Material

Excellent

30 August 2026Doyum

Good quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Fast delivery and very good quality. I get it each year for my daughter

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

18 June 2026Kackster

Ideal for ice skating

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Excellent legging for our wee figure skater. Cosy for being on the ice. Good quality

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Excellent

08 June 2026Jajo567

Nice thermal leggings

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Warm and comfortable ..keep your child warm durring cold days

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Average

Style

Average

Material

Average

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Average

Style

Average

Material

Average

10 April 2026Angela add

Heat

Originally posted on marksandspencer.com (UK)

Purchased for hol in iceland.did not dissapoint.should be available in larger sizes for youths

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Good

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Excellent

Material

Good

10 March 2026Csim

Lovely leggings

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Get exactly what you pay for!! Great quality, wash up well. Sizing is good, perfect for my grandson who has a painful condition brought on by the cold. Keep him toasty and warm.

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Good

Material

Excellent

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

Value for Money

Excellent

Style

Good

Material

Excellent

26 February 2026nr2001

Always outstanding

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

We were very pleased with the quality of our purchase. That is what brings us back time and again to 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

26 February 2026SueCFU

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Happy with these Thermal leggings. Good value. The children's sizes are great for me as im petite.

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 February 2026GeMc84

Great additional layer

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I bought this for our trip to Copenhagen this February as the weather was very cold. My son liked it, he said it kept him warm and was very soft and comfortable under his trousers.

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 February 2026Liliwenfach2

Great quality

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Its so cosy and quick to dry, I bought two and three matching vests in three different colours! I wear them in the gym!

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

02 February 2026MotherMumMumz

Warm, Cosy Feeling

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great fit and keeps my daughter lovely and warm! Would definitely 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

29 January 2026AE84

Does the job!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought these for my grandson for travelling to and from school and for weekend rugby and football!

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

26 January 2026DurhamDee

Great quality, & would certainly recommend

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great to wear & comfy, wash lovely, & cosy for the winter weather

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

1 of 14