The Arid Semi Dry snorkel by Oceanic is great for those between dive times. The patent pending dry top deflector helps prevent water entry caused by wave chop and splashing. The drop away flex tubing keeps it out of the way when using your regulator and the replaceable 100 percent liquid silicone mouthpiece is not only comfortable, it is also replaceable. The Arid is a semi dry snorkel which means that it will fill with water when you free dive but because of it's oversized purge valve clearing the snorkel of that water is a breeze.