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M&S is our go-to for thermals - here are some of the best-selling sets

Best M&S thermals for men and women. (Marks & Spencer)
Best M&S thermals for men and women. (Marks & Spencer)

The colder seasons have arrived (rather quickly, might we add) and if, like us, you're feeling a little underprepared for the cold snap, Marks & Spencer's thermals collection can help.

We love a thermal that layers inconspicuously under your clothes and Marks & Spencer (M&S) has delivered.

Nobody wants to invest in an autumn wardrobe to wear a permanent fleece covering it all.

What's more, many of M&S' thermals use a Heatgen Plus fabric, which is brushed on the inside for optimum insulation.

Not only are these thermals discreet and hard-working, each one comes with hundreds of five-star reviews.

These won't just last you for a season, the ultra-soft fleece-lined material will be pulled out of your box of winter clothes year after year.

Looking for a bit of inspiration? These top-rated sets are our favourites for the chillier months ahead.

Best M&S thermals for women

Heatgen Plus™ Thermal Long Sleeve Top | £16

(Marks & Spencer)
(Marks & Spencer)

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This year's version of the super popular Thermal Long Sleeve Top has new and improved stretch so it feels even more comfortable under your clothes. Its rounded neck helps it to fit seamlessly under tops and dresses and it comes in six colours for every outfit occasion.

With almost 900 4.5 star plus reviews, people are very happy with the quality of this thermal top. "I have a few of these vests, they are a comfortable fit, good quality & for me an invaluable extra layer as the weather gets cooler."


2pk Heatgen™ Thermal Leggings (2 Pack)
| £25

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These lightweight Heatgen™ Thermal Leggings feel much softer and thinner than you would expect for such a warming pair of leggings. We have the Heatgen technology to thank for that. Available in black and navy, these are great to pop under a dress or even a pair of jeans to keep yourself warm.

"Great! All ready for winter! Well made, comfortable, good sizing, I shall be ordering more they are that good," one reviewer said, and at just £25 for two, fill your basket.

Heatgen Plus™ Fleece Thermal Top | £16

(Marks & Spencer)
(Marks & Spencer)

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You might not be able to notice it, but this Thermal Top is made from a soft brushed fleece to keep you even cosier as those winter nights draw in. Available in navy, black, grey and cream, these also make great options if you've got a ski trip planned.

"Perfect with another layer on cold days. So comfortable, NOT itchy. Love it so much, I now have three," one glowing review said.

Heatgen Plus™ Fleece Thermal Leggings | £16

(Marks & Spencer)
(Marks & Spencer)

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These leggings also have added stretch for comfort and a super-soft fleece brushed inside to be extra cosy.

“Wonderfully warm, this is my second set of these thermals” says one review. While another states they’re “really soft and stretchy and they don’t lose their shape or go baggy at all. They are fleecy inside and on top of that they are super warm.”

Heatgen™ Thermal Built-up Shoulder Vest (2 Pack) | £16

(Marks & Spencer)
(Marks & Spencer)

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This two pack of Heatgen™ Thermal Built-up Shoulder Vests are a great option for people looking for a little more support around the shoulders. Extra comfort plus extra warmth equals a big yes from us.

One review said: "These Heatgen vests are perfect for when the weather is cooler. They aren’t too heavy & fit nicely under t shirts & jumpers. They are also long enough to keep my back warm."

100 Denier Thermal Heatgen™ Opaque Tights | £10

(Marks & Spencer)
(Marks & Spencer)

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When it comes to warm winter tights, they don't get much better than the 100 Denier Thermal Heatgen™ Opaque Tights. Available in three colours - grey, black and navy - these are our top pick for anybody commuting in the cold this winter.

And, the reviews back us up: "Good quality tights, lovely, soft feeling and comfy. Feel like support tights but very comfortable."

Best M&S thermals for men

Thermal Medium Warmth Long Sleeve Vest | £18

(Marks & Spencer)
(Marks & Spencer)

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Available in grey, black, white and berry, the Thermal Medium Warmth Long Sleeve Vest is made with compact-spun fabric for extra warmth. The stretchy, ribbed neck also helps to make it fit seamlessly under your clothes. Warmth plus style is a winning combination.

"This thermal top, is thin enough to wear under a jumper. It does keep wearer warm, washes well and dries quick," the reviews say.

Light Warmth Thermal Vests (2 Pack) | £25

(Marks & Spencer)
(Marks & Spencer)

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Using the clever Heatgen technology to create a cosy, lightweight base layer, this two pack of Light Warmth Thermal Vests move with you as you go about your day so it holds its shape. It's also made with a moisture-wicking fabric to keep you dry.

And, these aren't just bought by men. One reviewer said: "These are thin but warm. I like the Heatgen thermals for both men and women. They wash well and keep their shape."

Light Warmth Thermal Long Johns (2 Pack) | £25

(Marks & Spencer)
(Marks & Spencer)

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Long johns are a must if you're out and about in the cold winter weather (think: chilly dog walks) and they don't come better than this two-pack of Light Warmth Thermal Long Johns. Available in black, cream, blue and khaki, they're lightweight enough to fit under your clothes but warm enough to stop you shivering.

"Brilliant - really thin and a snug fit but beautifully warm," one reviewer said. Oh, and if you're off skiing, many people were very pleasantly surprised by the warmth in sub zero temperatures.

Light Warmth Thermal Vest (2 Pack) | £22.50

(Marks & Spencer)
(Marks & Spencer)

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These tops are so gentle and soft against your skin and yet the Heatgen technology keeps you super toasty during those chilly months. Plus, these have the same anti-moisture fabric as the long sleeved option.

These are a hit with elderly people in need of a little bit more warmth: "My elderly father love these! They are great for just the right amount of warmth during the warmer months."