The stretchy design of the Airhole Airtube Ergo Waffle Fleece Facemask means this mask remains comfortable all day, all season long. The Airhole is standard on all Airhole masks and is designed to allow breath to escape freely, avoiding the build-up of condensation to keep you dry, warm and your goggles fog free so you can stay out there longer. The fabric wicks moisture to the surface for rapid drying and allows air to flow freely, finished with a Durable Water Repellent coating to bead water and prevent the fabric from becoming damp.