Snorkels & Accessories > Classic Snorkels A classic snorkel is just that, a solid tube with a mouthpiece. Sometimes these can be bent to a specific shape or folded into your BC pocket, but they are generally not as comfortable to use as one with a flexilbe tube section. They have no splash prevention, and no purge valves, and if you dive underwater or have a wave fill the tube, you will need to clear it by exhaling forcefully.