These heavyweight RedHEAT EXTREME women's base layer bottoms live up to their name. The RedHEAT fabric featuring micro-crystals that generate and store body heat for optimal body temperature regulation provides comfort in extreme conditions. Thanks to the RedHEAT-infused technology with superior moisture management, this thick snowboard base layer guarantees the most enjoyable experience during any winter sport. With a brushed inner material for more warmth and a high covered elastic waistband, gussets, and anti-friction flatlock seams, they’re the comfiest thermal leggings out there.