Cressi America is the snorkel specially designed for the free diver and the underwater hunter. A short and thicker tube is used to ensure better respiration at the surface. Flexible mouthpiece. 100% silicone. Here there is no valve at the bottom, this can scare away fish and especially the mullet when you dive down with air bubbles behind you. A snorkel for life. Simple is good when it's uv hunting.