Neat snorkel works,

Needed a simple snorkel with no frills, which can be blown out smoothly. Various cheap parts that came with some children masks, inside have fins or burrs that prevent exactly that and are thus unusable. Valves or the like, I find only disruptive and prone. Have ordered this and to the "Uni Cressi Snorkel Gringo". The latter is even cheaper, but not elastic.

To make it short: On holiday I used the simple "Gringo". Not because of Corsica would be directly bad. It works well, but the resilient, flexible design was me subjectively rather unappealing as the as usual stable part. The bending radius was rather a bit tight for me advised likely to the curved shape easily fit snugly. When simple snorkeling are both use to, but the sense of flexibility does not open up to me.

Anyway you do with buying safe no mistake, in my tuts the simple but by no means bad.