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M&S

2pk Heatgen™ Thermal Long Sleeve Tops

£25

Colour

Customers say:

Fits true to size()
Size

Matching items: Thermal Leggings
Free standard delivery over £60

Product code: T329101

About this style

Beat the chill with these Heatgen™ thermal shirt tops. Made with our innovative heat-retaining fabric that feels gloriously soft against your skin, they feature a scoop neckline and long sleeves. The added stretch ensures a snug, flexible fit that's perfect for layering as a baselayer, while the light warmth rating provides just the right level of cosiness. Comes in a convenient pack of two. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

Details & care

Features

Heatgen™ technology

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

Composition

66% acrylic, 28% viscose and 6% elastane (exclusive of trimmings)

Care

Wash at 40°C

Do not bleach

Do not tumble dry

Do not iron

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 (2252)

4.5

68% Recommended this product

Mentions
15 January 2026Toby10craw
Verified Purchase

Quality purchase

Yes, I recommend this

Bought for cold weather months and holidays next year

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

15 January 2026Budrose
Verified Purchase

Great for winter warmth!

Yes, I recommend this

Beautiful, lightweight vests that truly keep you warm. If you’re like me and don’t like a lot of bulky clothing in the winter, these are a great choice. Can be worn under a blouse or dress and still feel cosy. My only advice would be to size up as they really are snug.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

15 January 2026VRBerks
Verified Purchase

Excellent value

Yes, I recommend this

Great value, good quality. Great for layering not too thick

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

15 January 2026Mellymoo99
Verified Purchase

Extremely warm. Ultra thin

Yes, I recommend this

Great value, ultra thin so fits great under clothing.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

14 January 2026D A H
Verified Purchase

Perfect

Yes, I recommend this

Lovely fit and so fine that no one knows you are wearing it under other cloothes

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 January 2026Lindsay W
Verified Purchase

Thin but soft and cosy

Yes, I recommend this

Good lightweight tops which are very soft and surprisingly warmer than the look. Excellentvalue and great fit. Have stocked up on more and matching leggings sets.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 January 2026KarEA
Verified Purchase

Good but check size

Yes, I recommend this

These are very good but the sizing is very different from the short sleeve ones, I bought the same size and just assumed they would be ok so washed them and then discovered they are at least one size smaller, very disappointing and an expensive lesion

Reviewer Ratings

How did it fit?

Small

Helpful?

Reviewer Ratings

How did it fit?

Small

14 January 2026KarenK1978
Verified Purchase

Quality and cosy!

Yes, I recommend this

Love these, they keep me warm without being too chunky!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 January 2026Sofie54
Verified Purchase

Good buy

Yes, I recommend this

Nice and light weight for under a jumper. Washed well. True to size

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 January 2026Nicole1717
Verified Purchase

Highly recommend

Yes, I recommend this

Washes well, true to size. I’d highly recommend these thermal tops.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 January 2026Lexy7980
Verified Purchase

Part of pack missing

Yes, I recommend this

Ordered online only one in the ppack, not sure how this was sent out as it was obvious it wasn't a complete order, very disappointed in the service

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

14 January 2026Rugbybird13
Verified Purchase

Unexpected warmth

Yes, I recommend this

These were so thin but once on they exceeded expectations, comfy and so warm, love them.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 January 2026Frankie 1 2
Verified Purchase

Cosy tops well worth the money .

Yes, I recommend this

Brilliant I buy these all the time and now my daughter buys them now.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 January 2026Jophe2004
Verified Purchase

Excellent useful items

Yes, I recommend this

I always purchase these thermal vests as they can be worn either dressed up or down as a layer and the quality is excellent. As they are available in various colours it makes them more adaptable all year round. I have purchased these particular ones for my sister as a useful birthday gift knowing she adapts hers to suit her attire and will appreciate them.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

13 January 2026Margo0310
Verified Purchase

Must have for home workers

Great long sleeve tops - I have poor circulation and work from home these tops go underneath my sweater and are so soft (even after washing) long in the body so they don’t ride up when sitting and so thin that I forgot I have them on. They are generous around the upper arms but no bunching up. These have become a part of everyday wardrobe staple/must have during the cooler part of the year

Helpful?

13 January 2026angelwitch
Verified Purchase

Great purchase.

Yes, I recommend this

Really pleased with this product. The fit is perfect and is easy to wear under any top, perfect for cooler days

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 January 2026Dolly130
Verified Purchase

External clothing slide on easily

Yes, I recommend this

Provide extra layer for warmth without bulk. External clothing slides over very easily.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

11 January 2026DebbieNW
Verified Purchase

Warm

Yes, I recommend this

Purchased for my daughter for Christmas and she loves them. Warmth without the bulk, super soft and great quality, perfect for her wearing under her work tunic.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

11 January 2026Sara x
Verified Purchase

warm ,recommend, true to size size 12

Yes, I recommend this

Good fit , nice and soft scoop front but wore the scoop neck to the back.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

09 January 2026VinnyC
Verified Purchase

Long sleeve thermal tops

Yes, I recommend this

When I ordered these I had no idea this wintry weather would be so severe. I already had Heatgen vests so I knew I would be getting something that really does keep you warm. They are absolutely wonderful and the fabric is so lovely and fine that it doesn't add any bulk to the body. I highly recommend them!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

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