M&S
Heatgen™ Medium Thermal Long Johns
£20
Product code: T148814N
About this style
These thermal long johns provide medium warmth with a regular fit, perfect for cooler days as a base layer underwear. The insulating brushed-back fabric offers breathability for lasting comfort, while comfort seams ensure a snug feel. Featuring Heatgen™ technology that helps generate and retain body heat when temperatures drop, making this undergarment ideal clothing for layering. M&S Collection: easy-to-wear wardrobe staples that combine classic and contemporary styles.
Medium warmth for wrapping up in moderately cold conditions.
Details & care
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, 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 policyReviews (563)
Brilliant product
Yes, I recommend this
As an arthritis sufferer the warmth from these thermals is so good and helpful
Helpful?
Good quality.
Yes, I recommend this
Good quality, nice fit. Very soft fabric and comfortable round waist.
Helpful?
Nice and warm
Yes, I recommend this
Nice and warm for under trousers when working outside
Helpful?
Warm Soft and very cosy
Yes, I recommend this
Perfect to keep warm when the weather gets colder.
Helpful?
Great and long-lasting quality.
Yes, I recommend this
I have been buying Heatgen clothes from M%S for a longtime. I find them so warm, cozy and comfortable. They are wonderful to use in the winter months at home or when out. It saves using the heating all day. They are so good, I now have my husband buying them! I recommend them to anyone. Can you please provide more colours?
Helpful?
Good quality
Yes, I recommend this
Good for in my wheelchair during the cold winter months.
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My go to for thermal underwear!
Yes, I recommend this
Always purchase thermal underwear from M&S, for my husband. Great quality, fit and price. As long as he’s cosy, that’s fine by me.
Helpful?
Prefer the previous design
Yes, I recommend this
Material is good but possibly a few microns thinner than a few years ago, like the new style elastic waist band but not the one button fly front. The previous Y front style fly is probably more expensive to produce, more material and time.
Helpful?
Good quality
Yes, I recommend this
Bought these for my husband. Said they are very comfortable, keep his legs warm and good quality. Better than cheaper brands.
Helpful?
Really pleased with the quality of this garment.
Yes, I recommend this
My husband hasn't worn these yet, but really pleased with quality of this garment.
Helpful?
Pleasantly snug fit
Yes, I recommend this
Need to be longer … good snug fit … need coloured options in maximum warmth apart from black, grey n white
Helpful?
These will definitely keep me warm
Yes, I recommend this
I wasn’t sure about the colour but it’s fine for me
Helpful?
Super soft
It fits my 14 year old son perfectly and keeps him warm.
Helpful?
A very good buy
Yes, I recommend this
Very good quality, hubby happy with the purchase and would buy again
Helpful?
Nice and warm..
Yes, I recommend this
Ultra comfortable and cozily warm. Great fit without being too tight. I can honestly highly recommend this product!!
Helpful?
Value for money
Yes, I recommend this
When it came time to replace my well-worn thermal pants, I always chose M&S. The pants are well made and value for money.
Helpful?
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?
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.
Helpful?
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
Helpful?
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
Helpful?
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