Heatgen™ Thermal Leggings

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

Marks and Spencer Women's Animal Print Heatgen Thermal Long Sleeve

Best fleece-lined leggings in 2024 for warmth and comfort

Marks and Spencer Women's Heatgen Thermal Long Sleeve Top, Black

Heatgen™ Thermal Leggings, M&S Collection

Made with Heatgen Plus™ thermal technology, these lightweight leggings are great for staying warm on chilly days. Added stretch for a comfortable fit.

Heatgen™ Medium Fleece Thermal Leggings

These supersoft, lightweight leggings will keep you cosy on colder days. They're made from fleece with Heatgen™ Max technology which helps to lock in

Heatgen™ Max Thermal Fleece Leggings

Heatgen Thermals, Lingerie

2pk Heatgen™ Thermal Short Sleeve Vests (2-14 Yrs), M&S Collection

Marks and Spencer - Feel cosy during chilly nights with soft and