M&S Collection

Heatgen™ Thermal Leggings

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Lovely and lightweight as well as beautifully soft and stretchy, our Heatgen™ thermal leggings are a key layering piece for those colder days. Giving a sleek fit for a fantastic finish, team these women’s layers with skirts, dresses or longline tops for thermal style done fabulously.

  • Product ID: T32/7200


    • Added stretch
    • 59% acrylic, 36% viscose and 5% elastane,(exclusive of trimmings)
    • Machine washable
  • You may return unused products within 35 days of purchase.

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    FREE Delivery to Store: 3-4 working days. This delivery option is not currently available.

    EXPRESS DELIVERY: 2-3 working days. FREE for orders over £75, otherwise £5.99.

    Standard Tracked Delivery: 3-4 working days. FREE over £50, otherwise £3.50.

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Heatgen™ Thermal Leggings is rated 4.4 out of 5 by 331.
Rated 5 out of 5 by from My fave slim thermals - great for fibromyalgics I bought these last year and they are simply the most comfortable, attractive and unobtrusive thermals. I have had fibromyalgia for over 25 years and finding clothes that sit well, do not rub and keep me warn underneath other garments, can be a challenge. I wear these underneath jeans and don't feel that hemmed in feeling that tights can give. I sometimes wear them as pyjamas too. They pack easily and the fact you cab buy a size 6 or 8 is brilliant for me. I loved buying them instore as I could feel them and assess the size. Thank you, Bracknell Marks and Spencers for stocking these.
Date published: 2018-11-22
Rated 1 out of 5 by from What's happened to the quality) I have been buying these thermal long johns and tops for years. I have always been very pleased with them. I am a size 10/12 but buy these in a size 14 as I don't want them skin tight. Well I bought a size 16 as I wanted to see if I could wear them indoors as leggings. they were too short and too small and the material was thin and scratchy .. How these would fit a size 16 person I don't know. Stop skimping on our favourites M&S. I would rather they put the price up and kept the quality UP
Date published: 2019-07-18
Rated 4 out of 5 by from I'm happy with them but there are 2 considerations They are comfortable and warm, so I am happy enough with these leggings, but there are two things to consider if you are thinking of buying them. a) Although they feel quite warm, the material is not very thick. b) They are definitely hipsters. The picture shows that, but I still expected them to pull up a bit higher. I don't mind, but if you want them to come up to your waist you will be disappointed.
Date published: 2016-02-10
Rated 4 out of 5 by from Great for layering and keeping cosy at home These are very comfortable and soft thermal leggings. Pros for me: - Very soft and not at all itchy, even at the seams - Fit snug against my body without feeling too tight - Easy to wash and don't pill, despite being washed a lot - Keeps the warmth in nicely without getting too hot and sticky-feeling - Can be worn as an underlayer, to sleep in, for yoga, etc. I wear these around the house quite a lot when it's cold in winter (or in summer!) and sometimes wear them with shorts on top for exercising. They're a bit pricey, and because they have quite a visible seam, I don't like wearing them as leggings under a skirt unless I'm wearing tights or something else on top. They're a bit too sheer at the bum to wear without something over them if you're around people who you don't want seeing your underwear!
Date published: 2016-01-30
Rated 5 out of 5 by from Fabulous lightweight thermal leggings!! i simply cannot rate these highly enough, they are thin enough to wear under the tightest of jeans,trousers,jeggings,leggings and even opaque tights without being uncomfortable or cutting in. Makes one feel so cosy, snug and warm,pack up to next to nothing in the suitcase and have bought the roll necks and scoop neck in several colours. Wash like a dream( inside out in a net wash bag ) on a cool wash then left to dry naturally. They don't even need ironing! Wouldn't tumble dry mine to be on the safe side,just in case. Bought a 12 in the black( my normal size) and they fit perfectly especially with the stretch of the material. One of the most brilliant innovations in thermal wear for a long time marks, don't stop doing these!! Have also bought them for my daughter and son,who are also thrilled with them,too. Well done!
Date published: 2015-11-22
Rated 5 out of 5 by from Warm leggings Heatgen leggings are lightweight, warm and very smooth, which makes them ideal for wearing under trousers. If you still like to wear your denim jeans in winter, but find them a bit cold, these leggings are the perfect answer. They will keep your legs warm without bulk. I always wear them when dog walking. Love them!
Date published: 2016-12-06
Rated 5 out of 5 by from Keep their shape I bought these to wear as footless tights with skirts and long boots . They are perfect . Not to thick ( and fairly see through)so they do look more like a knitted pair of tights rather than leggings . Have kept their shape after wearing all day with no bagging at knees and have washed well without bobbling. Great for wearing as footless tights but could definitely not be worn on their own as leggings as you can see underwear straight through them.
Date published: 2015-12-10
Rated 5 out of 5 by from Season must have I started buying these leggings around 4 years ago and every year I have purchased at least one pair. This year I have purchased them in burgundy as it is the colour of the season and I love it. Really good colour for layering. It goes well with denim skirts, cord skirts and dresses. Wear with long or short boots. These are thin leggings, they are designed to be more like tights not jeggings. They are very good quality and wash well and dry very quickly. The black ones I bought 4 years ago are still going strong. 5 stars.
Date published: 2015-11-10
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