Kryptek Altitude Cover: Features the “Phelps Game Calls” screen printed on one side of the tube.
-Large corrugations in the chamber provide great resonance.
-Corrugations provide structure to the tube
-1.25″ flared mouth opening for comfort and usability.
-Over-Cupped Exhaust Bell for backpressure and resistance making it easier to use ALL diaphragms.
-Thick walls for extreme volume and NO plastic sound.