Aqua Sphere SEAL Swim Masks fitted with tinted lenses are designed to provide great visibility when swimming outdoors. The light-weight Plexisol tinted lenses have 100% protection from UVA and UVB rays. As with other SEALS, the mask has 180-degree visibilty and are shaped for minimal drag. Additionally, they are virtually leak-proof and provide the ultimate in dryness, comfort and vision. Note: Choice of frame color is ours and is based on inventory, however, if you would like a particular frame color as shown in the photo, please send us a Feedback and we will do our best to meet your request. Official Swim Mask of the Ironman Triathlon.