ioSafe uses a patented water barrier technology call HydroSafe to protect your data. HydroSafe technology is designed to protect data loss from fresh or salt water damage, including full immersion. Simultaneously, HydroSafe technology still allows the heat dissipation required by all computer hardware during normal operation.

All ioSafe products are inherently flood resistant and designed to prevent water from damaging the data. The FloSafe vents can be closed or open - it doesn't matter.