IST Atum Frameless Dive Mask Color:Black helping to keep it safe

helping to keep it safe from the harsh marine environment when not in use

Simply breathe out through your nose and any water that has accumulated in your mask is forced out through a one-way purge valve

User Replaceable Battery

By connecting the clip to your watch and a USB to your computer

provides the perfect balance for divers to produce powerful kicks with easy but energy-maximizing movements

IST Atum Frameless Dive Mask Color:Black helping to keep it safePerfect for free diving Frameless twin lens mask made from hypoallergenic liquid silicone; Low interior volume design; Perfect for free diving; Equipped with IST MS25 silicone mask strap.