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2 Pack Heatgen™ Light Thermal Long Sleeve Tops

Product code: T149482

About this style

These lightweight thermal tops balance warmth with everyday comfort. Cut to a regular fit, our Heatgen™ technology provides warmth for cooler days, making them ideal as a base layer. The long sleeve design with Flexifit™ technology allows for ease of movement while preserving the garment's clean lines. Soft seams and heat-sealed labels add comfort against the skin. The moisture-wicking fabric ensures day-long freshness, perfect for layering under your favourite white or black shirts. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

Light warmth for cooler conditions and everyday comfort.

M&S

2 Pack Heatgen™ Light Thermal Long Sleeve Tops

£28

Colour

Size

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

Reviews (912)

4.6

68% Recommended this product

Mentions
12 March 2026c0nc0rde4
Verified Purchase

would recommend

Yes, I recommend this

I have purchased these items many many times, and would so again.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

09 March 2026AffinityInspiration
Verified Purchase

Perfect for winter warmth

Yes, I recommend this

I've purchased these late in Winter, but they are warm as toast. Just right for my trip to Oslo and Bergen in September. Im very happy with these.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

08 March 2026Happy Eva After
Verified Purchase

Perfectly warm and comfortable!

My husband LOVES these. He wears them under his t shirts and they keep him toasty despite them being the lightweight version.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

05 March 2026Ray211
Verified Purchase

Comfy

Yes, I recommend this

These tops are very comfy and warm, that fit well and are stylish

Helpful?

02 March 2026Panita
Verified Purchase

light, soft, comfortable

Yes, I recommend this

Just right under shirts/t shirts in colder weather. would also be good as tops to sleep in.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

01 March 2026Mmmmm11111
Verified Purchase

Great item

Originally posted on marksandspencer.ie

Yes, I recommend this

It’s our second purchase, they last forever and they so nice feeling to the body

Helpful?

01 March 2026One More Grumpy Old Man
Verified Purchase

Sizing not accurate

These new versions are not as good as previous designs. Small size is more like medium. They don't hug your skin as thermals ought to.

Helpful?

21 February 2026CBailey13
Verified Purchase

Wash and dry really well in the dryer.

Yes, I recommend this

My husband reels the cold with being on 2 blood thinners. These keep him lovely and warm without being too thick to wear under his shirt. The wash and dry well l without the need to iron. They don’t shrink either. He has the short sleeved ins as well as the long sleeved ones. Perfect for a cold winter.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

19 February 2026Debibee
Verified Purchase

Do not recommend

No, I don't recommend this

Bad quality very thin and loose over priced for quality

Reviewer Ratings

Comfort

Poor

Helpful?

Reviewer Ratings

Comfort

Poor

18 February 2026IanGP
Verified Purchase

Recommended

Yes, I recommend this

Needed light undershirt for outdoor actives. Good long length and comfortable to wear. Wash really well

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

18 February 2026Diane10W
Verified Purchase

Excellent warmth and comfort.

Yes, I recommend this

These were perfect for a trip to Berlin - great base layer to give warmth when it was minus eleven! Also a perfect fit. Highly recommend.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

15 February 2026Grannypiglets
Verified Purchase

Great quality

Yes, I recommend this

Lovely and warm! Really make a difference as a layer

Helpful?

07 February 2026Berkogal
Verified Purchase

Great quality and long length

Yes, I recommend this

I have a tall, skinny husband who is always cold, and these are probably his favourite thermal vests. Lovely colour and quality, and he really appreciates the slightly longer length.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

04 February 2026Lel37
Verified Purchase

Perfect for keeping warm

Yes, I recommend this

Perchased for son who was going to America at the beginning of January. Fitted well and kept him warm in minus 10 degrees.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

04 February 2026WorkingMum1000
Verified Purchase

good quality and price

Yes, I recommend this

Bought these for my husband-add warmth at a good price

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

01 February 2026Chris C
Verified Purchase

Great item, good quality.

Yes, I recommend this

Great item, good quality & looks good. Easy click & collect. Really pleased. Thanks 😊

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

31 January 2026Kath CP
Verified Purchase

Don't be without them

Yes, I recommend this

Great to keep warm on the golf course, a pleasant walk

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

31 January 2026Nickyj1
Verified Purchase

Great quality

Yes, I recommend this

Nice soft material with a great fit, really warm perfect length

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

29 January 2026TFSX1
Verified Purchase

Good quality, good fit

Yes, I recommend this

Good quality, nice thin warm top, perfect for layering

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

28 January 2026Dol 123
Verified Purchase

Warm as toast

Lovely thermals, so warm and comfortable. Love them.

Reviewer Ratings

Comfort

Excellent

Helpful?

Reviewer Ratings

Comfort

Excellent

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