These are Sweaty Betty's new and improved thermal leggings designed for winter running, crafted from heavyweight thermal fabric that is quick-drying, sweat-wicking, and features four-way stretch for optimal freedom of movement. Part of the brand's innovative HeatProtect collection, they hold a ‘Base’ rating to deliver temperature-regulating, moisture-wicking protection in all weather conditions. Cut with a high waist, they feature a smooth, supportive waistband that stays securely in place while you run, alongside practical storage including two overlapping side slip pockets for added security, two back pockets, and an additional zipped pocket crafted from breathable mesh.