Open Box Tusa Tina Scuba Diving Mask - FishTail Blue Diving Gifts and Apparel Waterproof's Exclusive Hood Air Venting 217921-02-OB Swimming Accessories Size:36/37 PRACTICAL All the great

Waterproof's Exclusive Hood Air Venting System (HAVS) uses Double One-Way Valves to Eliminate Annoying Trapped or Build-Up Air caused by your Regulator's Exhausted Air entering the Hood and features a 7 mm Double Layered Protection in Critical Heat Loss Areas

Its capability to adjust decompression based on the gases used provides significant safety benefits

User changeable battery and data retention

from beginner to tech diver

Open Box Tusa Tina Scuba Diving Mask FishTail Blue Diving Gifts and Apparel Waterproof's Exclusive Hood Air Venting 217921 02 OB Swimming Accessories Size:36 37 PRACTICAL All the great Waterproof's Exclusive Hood Air Venting System (HAVS) uses Double One Way Valves to Eliminate Annoying Trapped or Build Up Air caused by your Regulator's Exhausted Air entering the Hood and features a 7 mm Double Layered Protection in Critical Heat Loss Areas Its capability to adjust decompression based on the gases used provides significant safety benefits