I tested the popular M&S thermals and didn't need to turn on heating

By A Mystery Man Writer

#xa; Keen to find out if she could save on her heating by investing in Marks and Spencer thermals, reporter Dianne Bourne put the layers to the test - and she was amazed by the result

We spent nearly 3 hours out in -2ºC (28.4ºF.) BUT! With the thanks to

Heatgen™ Medium Thermal Long Johns, M&S Collection

Liang Rou Women's Scoop Neck Long Sleeve Ultrathin Modal Thermal Underwear Shirt/Top Apricot Small at Women's Clothing store

Hjikj by Vuelveprimavera - Issuu

2pk Heatgen™ Light Thermal Long Sleeve Top

Asda and Primark thermals compared to M&S version - with clear winner - Leicestershire Live

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

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

How much 'tech' is actually in Uniqlo's HeatTech?, Uniqlo

I tested the popular M&S thermals and didn't need to turn on heating for hours' - Mirror Online

Reviewing M&S thermals: Staying warm and stylish on the slopes - The Travel Hack