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M&S

Online only

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

£12 - £13

Colour

Customers say:

Fits true to size()
Waist

Free standard delivery over £60

Product code: T714003T

About this style

Keep them cosy with this handy two-pack of cotton-blend thermal leggings. Made from warm, stretchy brushed fabric. Two pair pack, both with elasticated waists and finished with ribbed ankle cuffs.

Details & care

Style

Product Style: Thermals

Safety Warning

Keep away from fire

Features

Thermal

soft and cosy brushed fabric that keeps warmth in

Composition

50% cotton, 25% polyester and 25% viscose (exclusive of trimmings) , Ribbing - 49% cotton, 24% polyester, 24% viscose and 3% elastane

Care

Wash at 40°C

Do not bleach

Tumble dry medium temperature

Iron at medium temperature

Do not dry clean

Delivery, collection & returns

Christmas delivery and collection last-order dates

Standard Delivery

Order by Saturday 20th of December

Nominated Day Delivery

Order by Tuesday 23rd of December

Store Collection

Order by Tuesday 23rd of December

Delivery

Standard

UK Standard Delivery is available for £3.99 or free on orders over £60 (excluding furniture).

Nominated Day

UK Next Day Delivery and UK Nominated Day Delivery (excluding Northern Ireland) are available for £5.99 (excluding furniture)

Collection

Collect from store

Store collection is free on all fashion, home and beauty orders.

Returns

UK returns

Free

Exclusions apply

Full delivery and collection informationOur returns policy

Reviews (55)

4.8

84% Recommended this product

Mentions
13 December 2025Londoner abroad
Verified Purchase

Essential in cold weather

Yes, I recommend this

I ordered it for my grandkids and everyone seems happy, including parents.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 December 2025Carolo1
Verified Purchase

Extra warmth

Yes, I recommend this

Needed addition for winter, especially in minus conditions. Extra warmth for playing in the snow.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

02 December 2025RuudieWhoL1T
Verified Purchase

No muss, no fuss

Yes, I recommend this

Good service. Good communication. Prompt delivery. No muss, no fuss.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 December 2025LHGC
Verified Purchase

Ok

No, I don't recommend this

My son says they’re ok but could be better as they’re not warm enough.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

30 November 2025Moca1
Verified Purchase

Warm and soft

Yes, I recommend this

Been buying this thermal for a few years. They are fluffy and warm. Not tight and sticking to the skin which is great!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

26 November 2025Bev2013
Verified Purchase

Very warm and wash well

Good quality, very warm and wash well, fabulous buy

Helpful?

24 November 2025Murte
Verified Purchase

Great quality!

Yes, I recommend this

Excellent fit and quality. Buying it for the second year running

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 November 2025TheMetalDad
Verified Purchase

Just the job!

Yes, I recommend this

Perfect for busy little ‘uns at school or at play. Very practical

Reviewer Ratings

How did it fit?

Large

Helpful?

Reviewer Ratings

How did it fit?

Large

04 November 2025Gabriela C
Verified Purchase

Perfect Warm Leggings for Winter!

Yes, I recommend this

These Heatgen™ Thermal Leggings are fantastic! I bought them for my child, and they’ve made such a difference during the colder months. The fabric is super soft, cosy, and lightweight, keeping them warm without feeling bulky. They fit really well, have plenty of stretch for comfort, and the quality is excellent — they’ve washed beautifully and kept their shape. Great for school, outdoor play, or layering under clothes. Brilliant value for a 2-pack — warm, comfy, and durable!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

03 November 2025ChathamNorthernIreland
Verified Purchase

Perfect for under clothing

Yes, I recommend this

Perfect for under clothing of pjs, snow gear etc, lightweight but warm

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 November 2025Liz 34
Verified Purchase

2pk Heatgen Thermal Leggings

Yes, I recommend this

Lovely and warm material very soft would recommend.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

24 October 2025Garhie
Verified Purchase

Thermal leggings

Yes, I recommend this

Children's thermal leggings. Ideal under trousers for colder days out for a walk or in the park

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

23 October 2025Maferocmen
Verified Purchase

Great Quality!

Yes, I recommend this

Very good quality, warm thermal leggings for my son to wear under his football shorts this winter.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

29 September 2025Anwy2025
Verified Purchase

Great but

Yes, I recommend this

Great quality and fits well more than I expected ticks all the boxes

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

26 September 2025Pamhe
Verified Purchase

Soft and cosy

Soft and cosy, I am petite so this size is good for me and it was cheaper than from adult one

Helpful?

21 April 2025Lisa Pentelow
Verified Purchase

Great

Yes, I recommend this

Bought as base layers for my daughter for skiing and were perfect

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

True to size

10 March 2025Blossomsganma
Verified Purchase

Soft & warm

Can only say these felt very soft and a good length. The recipient didn’t want them so can’t give more useful detail.

Helpful?

02 March 2025Pollycat2000
Verified Purchase

Perfect for cold weather

Yes, I recommend this

Bought for school days when it’s cold. My daughter is small for her age so we sized down and they are a great fit.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Good

How did it fit?

True to size

22 February 2025GWy

Gone saggy within hours

No, I don't recommend this

Seemed fine at first; but turned out that the elasticity is so poor that they’ve gone horribly saggy and baggy within a few hours of wear. But by this point have thrown away the packaging, so cannot return them :( Would not recommend.

Reviewer Ratings

Quality

Poor

Value for Money

Poor

Style

Poor

How did it fit?

A bit large

Helpful?

Reviewer Ratings

Quality

Poor

Value for Money

Poor

Style

Poor

How did it fit?

A bit large

20 February 2025Ksion
Verified Purchase

Quality nice soft on the skin when washed.

Yes, I recommend this

I would comment it to my friends. So soft o. The skin when washed. Colour remain in contact.

Reviewer Ratings

Quality

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

How did it fit?

True to size

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