John Lewis Heat Generating Thermal Leggings, Black

Product information

These heat retaining and heat generating thermal leggings will be a life saver during the winter months.

Heat is generated using the body's moisture, and the warmth is retained through a snug, comfortable fit.

The leggings are quick drying, have moisture wicking properties and are anti-static.

John Lewis
Eligible for International Delivery
Lingerie Type
Thermal Underwear
57% acrylic, 39% viscose, 4% elastane
Thermal Type
Washing Instructions
Hand wash


Click & collect

Free Click & collect from John Lewis or Waitrose shops for collection tomorrow from 2pm
370 participating John Lewis and Waitrose shops

Standard delivery in 5 working days (after Christmas)


Next, named or Saturday UK delivery (in time for Christmas)


Next/named day UK delivery pre-10.30am (in time for Christmas)


International delivery available

  • Europe (Non EU) - £7.50
  • Europe (EU) - £7.50
  • Rest of World - £25.00
Provided by JL Delivery Ltd - more about international delivery
From  £7.50


We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.


Find out more about returning products

Q & As

John Lewis Heat Generating Thermal Leggings 4.3 5 24 24
Great product These leggings are so comfortable and add warmth without bulk. 04 March 2014
Lovely Leg Warmers Bought these as an alternative to my cycling leggings and they are every bit as good at keeping me warm, though they are thinner. Sizing is good though the leg length is longer than expected. Overall a good purchase and will be buying more when needed. 04 March 2014
they're okay. they are nice and soft and they do keep you warm but you can achieve the same results with a pairof fleecy tights.... 09 February 2014
Excellent value These are fantastic! I'm delighted to find a size 12-14 instead of 10-12 - these leggings fit perfectly in length & width. I have worn them under thick tights which is really cosy, better than tights under conventional leggings and has the advantage of no bulk or knee bagginess. I have a long sleeved top as well. These are super base layers for carol singing on cold nights. 22 December 2013
Ok but go bobbly They are comfortable and warm. And yes if you are short like me (30") leg, they will also keep your feet warm. However, after wearing on about 4 occasions under jeans they have gone a bit bobbly. Not what I expected from John Lewis quality and for that reason would not buy again. 21 January 2013
Not for short people These are not particularly warm, in spite of what they're called, and they are extremely long in both the legs and the body. I will keep them but mainly for wearing around the house. I wouldn't buy any more. 17 January 2013
Comfortable but nothing special Happy with the purchase, but I'm not sure about the thermal function. They are quite lightweight and very long (for my shortishlegs) but fine as a normal pair of leggings. 06 January 2013
Toasty warm! Bought to replace pair bought a year earlier and which were still wearable but gone a little loose! Absolute life-saver when out in the cold at the yard! 03 January 2013
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