This essential elk hunting 4-pack includes the Premium Flex™ Single Reed, Double Reed, Triple Reed, and 2.5 Reed calls in a Diaphragm Stack Case. Using our Premium Flex™ process—stretching the latex in an exact 180-degree arc while locking it precisely into place—we create the perfect sound and fit. Made with ultra-durable Infinity Latex®, the result is longer lasting calls with superior sound and consistency.