M&S thermals are saving people from turning on the heating this

The Marks and Spencer Heatgen thermal tops use technology that helps the body generate and retain heat. Customers are saying they are so warm, they can turn down their heating.

9 best thermals for women to keep warm and cosy: From M&S to John Lewis

2pk Heatgen™ Light Thermal Long Sleeve Top, M&S Collection

B&M selling XXL energy saving thermal blanket for £18 amid 40% off sale - Wales Online

I dressed all over in M&S thermals to see if it saved putting the heating on' - Berkshire Live

Money-saving pick of the week: £20 thermal set tops list as it'll 'keep you warm in freezing weather' - Mirror Online

When the temperature drops, beat the chill in our thermal long johns. Regular fit with an elasticated waist and cuffed bottoms for snug and secure

Heatgen™ Maximum Thermal Long Johns

Energy saving tips Money Saving Expert

Shoppers 'turn off central heating' after trying £7 thermals that are cheaper than Marks and Spencer's - Manchester Evening News

Marks and Spencer Heatgen review: We dressed heat-to-toe to test thermals

I'm freezing – which thermal underwear should I buy?, Money

11 of the best energy-saving products that every home needs

Buy Women Thermals

M&S thermals are saving people from turning on the heating this winter

M&S fans ditch heating for hoodie blanket that costs less than 3p an hour to run - Daily Star