Update your browser for a better shopping experience!

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

M&S

Online only

2 Pack 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 warm when temperatures drop with these essential Heatgen™ thermal leggings. Two-pack design in a cosy cotton blend with brushed fabric for extra comfort. Elasticated waists ensure a secure fit while ribbed ankle cuffs hold the shape throughout active days.

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

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 (60)

4.8

85% Recommended this product

Mentions
28 December 2025Kimberly75
Verified Purchase

Good quality

Yes, I recommend this

My son says they keep him warm, good quality, washes well.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

21 December 2025MTNN
Verified Purchase

Super quality

Yes, I recommend this

My nephew loves them. They are great for keeping him lovely and warm. Will buy again.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

21 December 2025R2409
Verified Purchase

Good quality

Yes, I recommend this

Bought for my daughter for nursery when it's cold good sizing the leggings at the bottom are cuffed.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

18 December 2025Nazzers
Verified Purchase

Great quality and good value!

Yes, I recommend this

Needed some white bottoms for my grandson who was a snowman in his nursery nativity play. We chose these as they were good value and would be useful in cold weather underneath his trousers etc. lively and soft.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

15 December 2025sedra
Verified Purchase

Great for layering

Yes, I recommend this

They fit well and warm especially for school children.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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?

1 of 10