This is the XS Scuba Bypass Elite Snorkel Semi-Dry Top Snorkel Features: Streamlined semi-dry top Guards against water entering at surface Smooth bore silicone flex tube Replaceable curved mouthpiece Self-draining purge valve Improved quick-release snorkel keeper for easy removal from mask The Bypass Elite&';s semi-dry top will make snorkeling to and from the dive site a breeze even if waves are splashing water over you the snorkel top will prevent it from entering the breathing tube. "