Frontier Full-Face Snorkeling Mask - Adult Sizing - Eye to Chin > 4.5" - Green/BlackBreathe with ease underwater in the Frontier – Full-Face Snorkeling Mask. The 180° full-face design provides a superior, wide-angled view, while the anti-fog and dual airflow technology allows you to breathe naturally through your nose and mouth. This full-face snorkel mask includes built-in retractable ear plugs and has the capability to be attached to a GoPro® Hero Camera.Features:180° full-face design provides a superior viewLightweight, frameless mask, 369 gramsSoft, durable silicone skirt provides a comfortable, water-tight seal and maintains shape over timeAnti-fog designDual airflow technologyBreathe naturally, through the nose and mouthCombines dry top and purge valve to keep water outBuilt-in earplugs (retractable)