M&S 2 Pack Heatgen™ Light Thermal Long Johns - XL - Denim, Denim

For cold-weather comfort, these lightweight thermal underwear long johns provide warmth without bulk. Cut to a regular fit for easy movement, with soft seams for comfort. Heatsealed care labels ensure all-day comfort. Heatgen™ technology helps your body stay warm by generating and retaining heat. A practical fly front fastening completes this functional layering item.nnM&S Collection: Easy-to-wear wardrobe staples that combine classic and contemporary styles.