Immersed - Technical diving magazine (Summer 1999)
Sink Swimmers Ear

Keeping ears dry is now possible with the ProEar2000 from SR Services, Israel, and Oceanic USA, San Leonardo, Calif. The system provides absolute protection from waterborne ailments and contaminents and cold temperatures while easing equalization. It also improves the sense of sound direction underwater. The system was developed initially as a medical solution for chronic ear ailments, then adapted to address the pain from dive-related ear problems, which are the most common reason for aborting dives.