Halcyon Omnis is a streamlined diving mask that focuses on clear vision and a secure, low-pressure feel on the face. The mask uses a wide-angle lens layout to improve situational awareness underwater in different conditions. A soft skirt is shaped to follow the face more naturally and maintain a dependable seal as the diver moves. Multiple size options make it easier to find a comfortable match for different face shapes. Wide-angle lens design for a broader field of view underwater Soft silicone skirt that conforms to the face for a consistent seal Streamlined profile designed to reduce pressure points during longer dives Clip-in strap system that helps keep the mask stable and easy to adjust Included Soft protective case Silicone strap Clip mount Size and Fit Small: 115 mm fit width (inside skirt), 145 mm overall width (frame) Medium: 119 mm fit width (inside skirt), 150 mm overall width (frame) Large: 123 mm fit width (inside skirt), 163 mm overall width (frame)