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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.

M&S

2pk Heatgen™ Thermal Strappy Vests

€22

Colour

Band Size

Free standard delivery over €75

Reviews (48)

4.5

69% Recommended this product

Mentions
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

18 January 2026Liinaa

Soft & comfy

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

I only buy undergarments from M&S due to sensitivity of my skin, and M&S always delivers on excellent quality with softness and comfort. Love these strappy vests!

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 January 2026Pollyp2

NICE, COMFORTABLE VESTS

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Bought as an extra layer for the winter. Really nice and comfortable to wear and doubles up as an under vests on low neck tops. Really pleased for the price

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

06 January 2026Marblearts95

Good quality, do what they say

Originally posted on marksandspencer.com (UK)

Yes, I recommend this

Warm, they fit well and look good - just what I was looking for

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

05 January 2026cornus

Disappointing

Originally posted on marksandspencer.com (UK)

Much thinner than expected, don't know if it will actually work as thermal. Good that it has the adjustable straps

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

27 December 2025Crackie

Good Quality Vests

Originally posted on marksandspencer.com (UK)

No, I don't recommend this

Just what I needed for a gift. They are good quality vests.

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

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