The Wayne Carlton Alumni Pack features the original color coded diaphragm system. The Beginner Red Single Reed produces cow/calf and young bull sounds and is a great call for beginners. The Super Blue Double Reed produces everything from cow calls to mid and long range elk bugles. The Herd Bull Triple Reed produces deep, nasally cow calls and loud, deep-tone bugles. The new Cow & Calf call rounds out the pack. The Alumni Pack is made with moisture resistant infinity latex and an aluminum frame that allows for custom fitting to the user's palate, it comes with a durable plastic call case.FeaturesColor coded diaphragm system Red Single Reed Super Blue Double ReedHerd Bull Triple ReedCow & Calf call Moisture resistant infinity latex