Unfortunately, this year I have lost my old shotgun and needed for a new holiday. This snorkel is (almost) a full replacement. Why almost? Because a bit fiddly job is necessary before use. Because even with this snorkel valve above the deep breath is tight. But with a bit fiddly job can be the "troublemaker" easily removed. Why this air dampers can be found in almost all modern snorkel, remains a mystery. Choking yes no snorkeling.
But then you have a Super Snorkel, whose movable mouth part fits ideally, offer a very good supply of air and thanks to the lower blow-off valve can be blown out well after surfacing. The splash guard is also good, when things get a little "wave".