This is coated with an anti-fog film to prevent blurred vision when diving - Freediving mask with camera mount on top - Good Quality Silicone Diving Mask low volume Mask - Tempered Glass Lens Wide View with Anti-fog lens - Clear and Transparent - Anti Scratch and Anti Fall - Ergonomically designed for all types of shape faces - Comfortable fit and Water Resistant - Adjustable Silicon strap with good elasticity and durability - Tempered Glass scratch resistant - Mask fit tightly and water doesn't seep through - Keep your vision clear during Freediving