The core of each Powerbreather is the same, the WAVE model comes with the Standard Speed Vents Easy both short and long, as well as flip caps. The flip caps aid to keep water from entering during a flip turn. If you open water swim, fresh water or ocean, snorkel for any period of time, or do laps in the pool with flip turns, the Powerbreather WAVE is a dream of innovation. You breathe constant fresh air from the top tubes, while CO2 blows out the bottom. No more mixed air as on traditional snorkels. Now, with the Powerbreather, you can go the distance and focus on your swim, your technique, the ocean floor, your surroundings underneath you, or just find peace with your breath as you remove the efforts of turning to breathe and enjoy swimming. You can swim laps further than ever before without ever having to turn or raise your head in the pool. The valves only open for inhale, so no water gets in. Dive down to the reef and no water comes in, just come up and inhale. It's a dream of all snorkels.