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M&S

Heatgen™ Thermal Long Sleeve Shaping Body

£25

Colour

Customers say:

Fits true to size()
Size

Free standard delivery over £60

Product code: T329105

About this style

Sculpt your figure with this Heatgen™ Thermal Long Sleeve Shaping Bodysuit. The soft, brushed fabric offers light control for a streamlined silhouette, while the flattering long sleeves and high turtle neck add warmth and style. Made with innovative Heatgen™ thermal technology, this effective shaper provides lightweight warmth on chillier days without adding bulk. M&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.

Details & care

Item details

Model Height: 5ft9"/176cm

Model is wearing size: 12

Style

Control: Light control

Features

Heatgen™ technology

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

Composition

45% acrylic, 30% viscose, 19% polyamide 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

Christmas delivery and collection last-order dates

Standard Delivery

Order by Saturday 20th of December

Nominated Day Delivery

Order by Tuesday 23rd of December

Store Collection

Order by Tuesday 23rd of December

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 (36)

4.7

75% Recommended this product

Mentions
16 December 2025KingaH
Verified Purchase

Great item

Yes, I recommend this

Super happy with this. Great quality and especially with the fit which is something I regularly struggle with being tall and therefore long in the body and arm. Allows sufficient stretch without thinning the material. Purchased for skiing holiday - can’t comment on warmth as haven’t been yet.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

14 December 2025
Verified Purchase

Great in every way

Yes, I recommend this

This body is lovely in every way, it fits great, i bought size small, so its true to size, sleeves are nice and long, its smooth around waist and feels non itchy, warm and just perfect for every day, by the time i liked so much i went to get another one but my size sold out:( m&s please restock :) x

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

14 December 2025LyndaON
Verified Purchase

Lovely shapewear body

Yes, I recommend this

Love this shapewear baby. It’s dressy and practical, and very cosy. I am a 10-12 and went for the 12-14 which is very comfortable.

Reviewer Ratings

How did it fit?

A bit small

Helpful?

Reviewer Ratings

How did it fit?

A bit small

13 December 2025Jaen1
Verified Purchase

Perfect

No, I don't recommend this

Great fit, sometimes they can be short in the body but no problems. Lovely thick fabric and neck not too long or too short. Very impressed.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

12 December 2025jules2
Verified Purchase

Disappointing fit

No, I don't recommend this

Body suit is lovely quality but far too small. I’m a size 12 and bought the 12-14. Very very tight and am returning

Helpful?

10 December 2025Poppyfield
Verified Purchase

Excellent purchase

Originally posted on marksandspencer.ie

Yes, I recommend this

Good quality super soft thermal fabric and most comfortable. Fits snugly on body and true to size. Perfect for layering as not in any way bulky. Would purchase this again.

Helpful?

09 December 2025Junglebunny25
Verified Purchase

Really warm

Yes, I recommend this

Fantastic body, very warm and comfortable to wear. A little bit expensive but would still recommend

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

07 December 2025Lucas10
Verified Purchase

Keeps you nice and warm

Yes, I recommend this

First time I have bought one of these. Fits well under a blouse and gives warmth. Easy to put on.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

05 December 2025SH_
Verified Purchase

Excellent as I need to keep warm.

Yes, I recommend this

This is wonderful. I have washed it and it is all good even after the wash. Althought it was pricey for me (I bought two), but my condition requires me to be warm and this helps me as it stays in place and covers my back properly, rather than moving.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

28 November 2025Camy17
Verified Purchase

Very comfy and snug

Yes, I recommend this

Very nice and comfy material, love that it stretches and it’s true to size.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

22 November 2025Dena83
Verified Purchase

Great value for money and quality

Yes, I recommend this

I have always bought the heatgen thermal tops and especially love the bodysuits. They are great quality and good value. I was even happier that this style doubles up as shapewear. It is super comfortable and will keep you warm during the winter season.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

18 November 2025Aloelady
Verified Purchase

Great Thermal all in one

No, I don't recommend this

This is great for me, I am 5ft 6 and always feel that these body suits are not long enough for me but this one is perfect . Great for under the winter dresses I have without sleeves as well as wearing out for dog walking under normal clothes. Well done M and S for doing a longer version

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

18 November 2025Scoobio
Verified Purchase

Sleek body - my new favourite!

Yes, I recommend this

I wear bodysuits a lot and I am always on the lookout for one that is supportive/shaping, opaque, tight-fitting but comfortable, and warm (so it has to have a high neck). This ticks all the boxes! The material is soft but with solid support in the waist area, the arms are long and the neck is high (but not too high), and it is warm. The body is not see-through in the slightest, so I can wear it as a top at work. And when paired with faux-leather leggings or leather trousers, the bodysuit gives a sleek and sexy look!

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

07 November 2025Topsy711
Verified Purchase

Perfect in every way

Yes, I recommend this

This body suit if the perfect fit, warm, great quality, firm fastenings and it stays in place due to is true length, I often find bodysuits on the short side but not this one. I’ll definitely be getting another couple to add to my winter wardrobe.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

06 November 2025JKilc
Verified Purchase

Perfect polo.

Wanted a black polo neck for the winter, as I felt it would work will with skirts and trousers and this one fit the bill. Warm and cosy and thick enough to be worn as a top rather than just as a base layer. I sized up as other reviews recommended - normally a 10, bought the 12-14. It’s maybe a little big, but not too bad, and I rather than have it be uncomfortable. I’m very happy - I’d buy in more colours if they were available.

Reviewer Ratings

How did it fit?

A bit large

Helpful?

Reviewer Ratings

How did it fit?

A bit large

05 November 2025Ros_C
Verified Purchase

Just Fantastic

Very flattering especially under jeans with the midriff panel - no bunching. Warm and comfortable. I'm a petite 12 and sized up to a 14 as I don't like clingy clothes. More colours would be great.

Helpful?

03 November 2025Anonymous W
Verified Purchase

It’s a beautiful and comfortable body

Yes, I recommend this

It’s a beautiful and comfortable body. Very nice and soft material. Very happy from my purchase.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

03 November 2025
Verified Purchase

Light and warm

Yes, I recommend this

love the light warm feeing of wearing this. Very sleek and sexy

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

01 November 2025AIMcK
Verified Purchase

Great look

Love this shaping body, it is so comfortable and looks great with so many different things. Wish you had it in different colours.

Reviewer Ratings

How did it fit?

True to size

Helpful?

Reviewer Ratings

How did it fit?

True to size

26 October 2025AmandaGB
Verified Purchase

Perfect fit!

Yes, I recommend this

Just perfect, looks fantastic with just the right amount of stretch.

Helpful?

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