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2pk Heatgen™ Thermal Strappy Vests

Product code: T329207S

About this style

These thermal vests are made with Heatgen™ technology, using innovative fibres to retain your body heat so you can stay warm on colder days. They have a timeless strappy design, making them ideal for layering. Added stretch provides that extra bit of comfort. M&S Collection: versatile styles in modern shapes with unique and playful details.

Details & care

Style

Non padded

Non wired

Added Stretch

Features

Heatgen™ technology

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

Composition

57% acrylic, 38% viscose and 5% elastane (exclusive of trimmings)

Care

Wash at 40°C

Do not bleach

Do not tumble dry

Do not iron

Do not dry clean

M&S

2pk Heatgen™ Thermal Strappy Vests

€20

Colour

Band Size

Free standard delivery over €75

Reviews (53)

4.5

72% Recommended this product

Mentions
09 June 2026Mary S D

Great quality.

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Great comfortable feeling and perfect for all year round occasions.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

13 May 2026Bristol Lass

Great vests

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Fantastic vest. Really good fit with the adjustable straps. Not bulky but warm. Very nice feel on skin. Why can't i get them in more colours?

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

20 April 2026BizzyEvie

Not disappointed

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These are just what you need when the sun starts to shine but it's not exactly warm yet. Good quality, lovely soft fabric.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

03 April 2026nofrillsplease

My new favourites

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

These turned out to be exactly what I wanted, comfy fitting vests with adjustable straps - if only you could also stock white and other colours too…

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

26 March 2026FlossyH2005

Soft & cosy vests!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely soft thermal vests. Definitely kept my daughter warm and very comfortable to wear. Good value for money and wash very nicely. Would recommend and buy again. True to size.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

10 March 2026Newproudgranma

So soft and comfortable

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Very soft and comfortable. Kept me warm and felt so soft against my skin. Washed really well and kept its shape.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

02 March 2026Datar

Lightweight Extra Layer

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought to replace ones I had years ago. Prefer the lightweight heatgen as not too bulky under clothes. Adjustable straps, 14 ideal size fitted for 36f bra size. Soft material, only wish I could have them in white, as I had to buy the medium warmth in white on line, and it’s rather thick fabric also the straps are not adjustable . Keeping thermals for the British heatwave.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

23 February 2026JCJCJC2025

Disappointed. Get one single

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

V thin. They are than the single one I had bought although the product content weirdly is exactly exactly the same. Really annoying.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

23 February 2026P123k

Ok but flimsy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Warm but very thin material but do the job could wear without a jumper

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

17 February 2026Tigtigpo

To short

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Nice fabric true to size but too short to stay tucked in. So you end up with a chilly gap.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

11 February 2026Legginglady

Thermal vest

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Material is lovely and great under tips and jumpers

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

03 February 2026Joyll

Excellent Value and perfect fit

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Excellent value and perfect fit. The adjustable straps are really good for the fit.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

03 February 2026anonn12

Warm comfy vest

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely soft material and even though it has thin straps, it keeps you nice & warm. Great under clothes and a great price when bought as a pair

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

01 February 2026Amy9

Just ideal!

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

This is quite warm and ideal under all tops / dresses- doesn't show on any neckline

Helpful?

01 February 2026twooutofthree

Ok

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

The last ones I bought had a warmer lining. These are just cotton camis. A tiny bit short, I think.

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

30 January 2026SueBra

A bit thin and stretchy

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Quite thin and stretchy, does not feel as warm as the normal vests, not sure I would buy again

Reviewer Ratings

How do you feel about the size?

A bit large

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit large

30 January 2026Soraya B

Lovely strappy tops

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Lovely scrappy tops to wear under a top or jumper. Quite thin but do the job . Nice and comfy

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

28 January 2026Morris

Not Well Fitted and Quite Thin Fabric

I've bought several strappy vests from M&S over the years. They are usually well fitted to the body, although maybe sometimes too short. These vests are actually quite loose on the body, not well-fitted at all, and the bottoms of them are really quite floppy. I also can't figure out why they're called "Heatgen" because they're rather thin. Worried they're going to loose what shape they have very quickly.

Reviewer Ratings

Quality

Fair

Value for Money

Fair

Helpful?

Reviewer Ratings

Quality

Fair

Value for Money

Fair

21 January 2026Colette71

Good quality vests

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

This pack of vests I bought are a good fit and feel really comfortable on also they are warm I will definitely buy more

Reviewer Ratings

How do you feel about the size?

True to size

Helpful?

Reviewer Ratings

How do you feel about the size?

True to size

20 January 2026Vat 94

ThermalT strap vests

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Love these thermal vests soo cumfy. Would recomend great fit.

Reviewer Ratings

How do you feel about the size?

A bit small

Helpful?

Reviewer Ratings

How do you feel about the size?

A bit small

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