Heat Gen Leggings

Combining a lightweight feel with beautifully soft and stretchy fabric, these thermal leggings are perfect for layering for everyday warmth. Made with

2pk Heatgen™ Thermal Light Leggings

Heatgen™ Medium Fleece Thermal Leggings, M&S Collection

M&S Collection Heatgen Thermal Leggings with Cashmere, Compare

Heatgen™ Medium Thermal Leggings, M&S Collection

Heatgen™ Medium Fleece Thermal Leggings, M&S Collection

TheLovely Women & Plus Seamless High Waist Fleece Lined Warm Leggings (Beige - One Size Regular)

Equally perfect for layering or lounging, these versatile thermal leggings have your cold-weather comfort covered. Our innovative Heatgen Plus™ fabric

Heatgen™ Medium Thermal Leggings

I wore M&S viral £16 thermal leggings and I barely needed the heating on' - Rachel Williams - Daily Record

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

Heatgen™ Max Thermal Fleece Leggings, M&S Collection