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M&S

Heatgen™ Medium Thermal Long Sleeve Tops

£20

Colour

Size

Also available in: Short Sleeve and Long Johns
Free standard delivery over £60

Product code: T148813N

About this style

For warmth on colder days, this thermal long sleeve top features our innovative Heatgen™ technology for medium-warmth comfort. The regular fit allows for easy layering as a baselayer, while the stretchy ribbed neck ensures a comfortable fit. Featuring supersoft seams and insulating brushed back fabric for maximum comfort when temperatures drop, making it an ideal base layer top for cold weather. 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

Style

Regular fit

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

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 (1086)

4.7

71% Recommended this product

Mentions
31 January 2026ValerieMC
Verified Purchase

Used as PJ tops.

Yes, I recommend this

Bought as PJ tops for flannel PJ bottoms. My sons love them and find them very cozy.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

31 January 2026BB1695
Verified Purchase

Warm

Yes, I recommend this

Outstanding warm and very comfortable I got a medium size I’m 42 chest and it fits perfectly

Helpful?

30 January 2026MistyMisty
Verified Purchase

Cosy

Yes, I recommend this

My husband loves these. He wears them under shirts and sweatshirts.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

29 January 2026Steve from Cheshire
Verified Purchase

Great quality!

Yes, I recommend this

Nice item - soft & warm and easy to wear under a jumper or hoodie

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

28 January 2026South East buyer
Verified Purchase

Great layer

Yes, I recommend this

Really pleased with this for work. Not excessively hot so ideal for keeping warm while working. Washes well, good quality

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

27 January 2026ShopperMark59
Verified Purchase

Does what it says it will

Yes, I recommend this

Bought for general use. Definitely keeps you warmer and is very comfy to wear. Works for overnight too. Easy to clean. Very happy.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

27 January 2026Deeeeeeeeessed
Verified Purchase

Nice and warm

Yes, I recommend this

Good product purchased before. When washed they do keep their colour.

Reviewer Ratings

Comfort

Good

Helpful?

Reviewer Ratings

Comfort

Good

26 January 2026AshleyP
Verified Purchase

Winter warmth

Yes, I recommend this

Warm and comfortable, essential wear for the depths of winter. Soft material, wears easily under a shirt or fleece without bunching. Neck could have been a bit higher for my preference.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

25 January 2026Hafzy
Verified Purchase

Warm base layer

Yes, I recommend this

Warm and comfortable and a great fit. Ideal for winter

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

24 January 2026BWC
Verified Purchase

A quality warm base layer

Yes, I recommend this

True to size and good quality. Lovely and soft, warm material. Ideal for the wintery months. It has washed well.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

23 January 2026Josephsgran
Verified Purchase

Quality product

Yes, I recommend this

Very happy with this purchase. Compfirtabke thermal vest. Does what it says on the tin !

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

23 January 2026Kevin 59
Verified Purchase

Excellent thermals top

Yes, I recommend this

Very comfy and very warm. Exactly what I was hoping for.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

22 January 2026Astorija
Verified Purchase

Great quality

Yes, I recommend this

I bought the thermal long sleeve top for my son ,he loved it

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

21 January 2026Braberra
Verified Purchase

Lovely and warm

Yes, I recommend this

Great in the very chilly weather we have had, do need more than one though

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

21 January 2026Hate the cold
Verified Purchase

Warm!

Yes, I recommend this

Does what it says on the tin, nice and warm. Comfy.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

20 January 2026AngelinaBallerina13
Verified Purchase

Lovely and soft to wear and a great fit.

Yes, I recommend this

Lovely and soft to wear and a great fit. Washes well.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

18 January 2026Bramblebetty
Verified Purchase

Great product

Great product. Very warm. Husband loves it, we’ve bought previously.well worth purchasing.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

18 January 2026Roy1001
Verified Purchase

Medium Thermal Long Sleeve Tops

Yes, I recommend this

Keeps me nice and warm and I can feel the benefit when I'm outside and it is cold.

Helpful?

17 January 2026AmandafromTonbridge
Verified Purchase

Love them

Yes, I recommend this

All those these are for men I wear them as prefer them to the women’s thermals as I find them to tight and not long enough. Keep you lovely and warm and wash well

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

17 January 2026RS500black
Verified Purchase

Comfortable winter base layer.

Yes, I recommend this

T-shirts are no good in winter , especially short sleeve, so these thermal long sleeve tops are necessary base layer this time of year. Thoroughly recommended and I have this product as pyjamas set for sleeping too. They’re very comfortable durable and look good too.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

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