IST 3D Flex Dry SnorkelThe SN201 3D Flex Dry snorkel is the latest advancement in snorkeling technology! It has every conceivable feature combining to make the most comfortable and easy to use snorkel available. The special quad-valve dry top system has delivered a fully dry snorkel that will completely seal out water in the case of total submersion and in the case of a partial submersion will prevent water from entering the breathing passage while allowing the snorkeler to continue breathing safely. The snorkel has an innovative design for comfort also; with two separate 360 degree swivel joints that will allow the snorkeler to place the hypoallergenic silicone mouthpiece in the position most comfortable for them specifically. See the MP201 Ballena and the M88 Bluetech for a perfect color match and equally advanced performance. Advanced fully dry top. Two swivel joints for comfort. High quality Silicone. Purge valve. Comfortable and easy to use. Imported.