Used IST ProEar Pressure Equalization Mask with Watertight Ear Cups - Black / Black Used Hoods Even though the thickness is

Even though the thickness is only 1mm

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Used IST ProEar Pressure Equalization Mask with Watertight Ear Cups - Black / Black Used Hoods Even though the thickness isPlease note this is a USED ITEM offer. The item will be in good working condition, may show signs of use or wear. PRODUCT DESCRIPTION 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