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M&S Collection

Heatgen™ Medium Thermal Long Johns

£20

Colour

Customers say:

Fits true to size()
Size

Customers say:

Fits true to size()
Also available in: Short Sleeve Thermal Top

Product code: T148814N

About this style

Stay cosy with these cotton-blend thermal long johns. Regular fit, offering a medium level of warmth. Made from an insulating brushed-back cotton blend that's breathable for extra comfort. Finished with ultra-soft seams for snugness. Our clever Heatgen™ technology uses an innovative fibre blend, helping your body to generate and retain heat so you can stay warm when the weather gets chilly.

Medium warmth for wrapping up in moderately cold conditions.

Details & care

Style

Regular fit

Button fastening

Features

Thermal

Soft and cosy brushed fabric that keeps warmth in

Heatgen™ technology

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

Composition

50% cotton, 26% polyester and 24% viscose (exclusive of trimmings)

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

Free

Nominated Day

£5.99. Order by 7pm for delivery tomorrow

Collection

Collect from store

Order before 9pm for free next-day in-store collection

Returns

UK returns

Free

Exclusions apply

Full delivery and collection informationOur returns policy

Reviews (547)

4.7

72% Recommended this product

Mentions
08 April 2025CherrB
Verified Purchase

Long johns

Yes, I recommend this

My husband is elderly and finds it difficult to keep warm, but the long johns solved that problem, he loves them

Helpful?

19 March 2025Tree36
Verified Purchase

Usual great quality.

Yes, I recommend this

These long johns were purchased for the recent very cold spell. They were brilliant in keeping my husbands legs warm. Great fit.

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

17 March 2025cornedbeef
Verified Purchase

Warm but not comfy

Warm but has really big internal seams which mark the legs quite badly. I actually wore them inside out which was a lot more comfy

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Average

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Average

How did it fit?

True to size

08 March 2025Fabrice576
Verified Purchase

Perfect balance between warmth and bulk

Yes, I recommend this

Really like these long johns , perfect warmth to bulk ratio Particularly like the button opening as it allows wearing regular underwear too Very soft with no seams discomfort and washes well

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

07 March 2025L2D
Verified Purchase

Excellent quality

Yes, I recommend this

Item has fitted my father perfect and not too thick. Keeps him nice and worm

Reviewer Ratings

Value for Money

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Value for Money

Excellent

How did it fit?

True to size

07 March 2025GlensPen
Verified Purchase

Great, warm and good quality.

Great, warm and good quality thermals. Ideal for winter.

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Average

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Good

Value for Money

Good

Style

Average

How did it fit?

True to size

04 March 2025SuzieSu
Verified Purchase

Super warm and wash well

Yes, I recommend this

Super soft and warm. Make all the difference. Wash really well with no shrinkage.

Reviewer Ratings

Quality

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

How did it fit?

True to size

28 February 2025Ceedub
Verified Purchase

Excellent thermal leggings.

Yes, I recommend this

Excellent thermal leggings for those cold days outside.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

How did it fit?

True to size

24 February 2025Hillside Annie
Verified Purchase

So Comfortable - Warm, Soft, Lightweight...

Yes, I recommend this

My partner said he felt as thought he wasn't wearing any long johns because they are so soft, lightweight and comfortable. Like a second skin, and very warm.

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

22 February 2025Dit2
Verified Purchase

Great quality

Yes, I recommend this

Good quality, soft against the skin, they keep you nice and warm. As they should, wash well.

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

20 February 2025Poppet19
Verified Purchase

Great quality

Yes, I recommend this

I purchased 2 of the long sleeved tops last winter and added 2 more this winter, and decided to add a pair of these long johns to my collection, and wasn't disappointed, great quality and they do the job....

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

A bit small

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Excellent

How did it fit?

A bit small

19 February 2025Joy1947
Verified Purchase

Lovely and warm!

Yes, I recommend this

Just right for wearing under trousers on an electric bike.

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Average

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

Style

Average

How did it fit?

True to size

19 February 2025Marylu59
Verified Purchase

Fits well and warm as toast

Yes, I recommend this

Fits well very comfortable nice and warm does what it’s meant to

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

16 February 2025VegieGal
Verified Purchase

A leg saver

Yes, I recommend this

I purchased two pairs for a friend who works in an outside environment. His existing leggings would cause irritation so I suggested trying a cotton mix. So far so great. Also purchased a matching top to try.

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 February 2025P50wxm
Verified Purchase

Medium Thermal Long Johns

Yes, I recommend this

Really pleased with these, easy to order online and collect from local store

Helpful?

08 February 2025LBee55
Verified Purchase

Good quality fabric and fit.

Yes, I recommend this

Bought for outdoor activities during the winter. Good quality fabric and fit.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Average

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

Style

Average

How did it fit?

True to size

08 February 2025Sue E
Verified Purchase

Excellent

Yes, I recommend this

Bought for my husband who is very pleased with them and has asked me to buy some more!

Reviewer Ratings

Quality

Excellent

Value for Money

Good

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Good

How did it fit?

True to size

07 February 2025sandshrew118
Verified Purchase

Warm and comfy

Yes, I recommend this

Warm and comfortable like the other similar products

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

06 February 2025Lisbeth
Verified Purchase

Nice and warm

Yes, I recommend this

Husband says these are warm and comfortable, very pleased with them.

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

How did it fit?

True to size

Helpful?

Reviewer Ratings

Quality

Excellent

Value for Money

Excellent

How did it fit?

True to size

06 February 2025Kayess
Verified Purchase

recommend

Good fit and perfect for keeping warm and comfortable outside. Highly

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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