These thermal leggings are made with the innovative RedHEAT EXTREME fabric, composed of carbon microcrystals, it effectively retains body heat while guaranteeing excellent breathability. These pants feature a covered elastic waistband for optimal support, gussets for freedom of movement, and anti-friction seams that minimize irritation. With its composition of 51% polyester, 36% MaelTRX RedHEAT and 13% elastane, these leggings are perfect for cold days, whether skiing, hiking or other winter activities.