Vented DOC'S PROPLUGS help divers equalize safely, faster & easier. EASIER because Pressure Changes are less abrupt. FASTER because pocket of warm air prevents cold water from touching sensitive Eardrum. Diver can concentrate better doing the Valsalva Maneuver without PAIN. BODY HEAT warms water preventing THERMAL REFLEX. Cold water deep in External Ear Canal triggers a shock to SEMICIRCULAR CANALS. Symptoms: vertigo, disorientation, nausea and VOMITING. "STICK IT IN YOUR EAR" Be a Happy Diver!
A NOTE ABOUT ATTENDEE LISTS: DEMA does not sell or otherwise provide a contact list of DEMA Show attendees to any business or DEMA member. If you receive a solicitation to purchase a DEMA Show attendee list be advised that it is not an official or sanctioned list from DEMA, and may not be genuine or accurate.