These 3/4 leggings with RedHEAT EXTREME technology are the ultimate women’s base layer for cold weather activities. Infused with RedHEAT technology, these thermal leggings feature an innovative fabric with micro-crystals that generate and store body heat for optimal body temperature regulation, plus antimicrobial properties to keep you fresh on the slopes. The soft waistband elastic ensures a secure fit, while the 4-way stretch fabric allows for unrestricted movement. Plus, with a brushed interior for extra comfort, a gusset for enhanced mobility, and anti-friction flatlock seams to minimize chafing during high-intensity activities, they’re made to keep you warm, dry, and comfortable in extreme conditions. Wear this ski base layer with your ski boots, as they won't add extra thickness.