IST MASK BLACK SILICONE (ME55BK -BS)

• Special tube and seal system automatically equalizes ear pressure as diver exhales into mask
• Prevents pressure-induced ear ache (barotrauma)
• Enhanced underwater hearing and sense of direction
• Watertight ear cups keep water out to keep ears warm and prevent infection
• Optical prescription lens option available in diopters from -1.0 to -8.0 in -0.5 decrement