-These base layer pants are meant for all day use! Ideal for outdoor riding, hunting ,hiking, skiing, snowboarding, Snowshoeing, cycling and other outdoor activities. -Made from a high quality 100% Filament Silk -Features Thermoregulation Terramar Sports Technology that keeps you comfortable in all conditions and engineered to adjust to your body temperature. -Terramar's custom ClimaSense technology helps control your body temperature. -Light-weight warmth (1.0) makes this pant a great base layer.