The Snorkel Extender:

Adjustable cardio trainer

Easily adjust the air flow to simulate altitude training

Better than a cardio cap and also allow the swimmer to maintain a lower head position for head and body alignment

Works on Tropical Penguin, DMC, and A3 Snorkels. We’re working on the others. Call 800.999.0824

Adjust up for more challenge and down for less and then turn the blue lock.

Allows a deep head position for better head and body alignment

Light and comfortable too.