The IST Corona Mask has a glass positive diopter that will prevent fog from clouding your vision and a black silicone skirt that will block reflecting light, giving you a clear view of the underwater world.
• Glass positive diopter
• Black silicone skirt
- Blocks light from reflecting off lens
• Lens are tempered glass
- Prevents scratching
• Comes with non-prescription lenses
- Optical Lenses sold separately