If from the integrity of the equipment, is the full dry good, because the full dry with a number of national and regional patents on the anti-wave on the head and the lower drain valve design, help the user (whether novice or skilled) to reduce the choking, easy to breathe, comfortable to use, extend the dive time and so on. Very suitable for snorkeling at the beach, Hainan, Maldives travel essential. The water is good to choose a half-dry can also be, half-dry did not fully dry to the kind of wave protection on the head. It is a simple anti-wave on the head.
The following is a half-dry diving snorkel illustration:
The following is a full-dry diving snorkel illustration: