Free divers snorkelers and scuba divers will all benefit from the Mares Marlin Mask Snorkel Combo. The low internal volume allows the mask to fit closer to the face making them easier to clear while providing a larger range of vision. This large range of vision is perfect for scuba divers and snorkelers. Rapid action buckles can be adjusted to your head while the silicone skirt ensures a water-tight seal around your face