The North Face says about the About A Day Pant Women's
These waterproof and lightly insulated trousers are tough enough for the harshest winter conditions. DryVent™ technology and Heatseeker™ Eco provide the optimum combination of breathable yet ultra-warm waterproofness, while mesh-lined inner-thigh vents allow you to regulate your temperature when blasting down steep slopes. The grippy hems have a boot clip that creates a tight seal to stop snow from getting into your boots.