The Riven Stratum Elk Diaphragm is a professional-grade mouth call featuring a technical black-and-white design. Constructed with high-quality latex, it is tailored to provide the specific backpressure needed to mimic large ungulates. This versatile, hands-free call produces everything from high-pitched, piercing bull elk bugle screams to soft, nasal cow and calf social sounds. The Stratum design focuses on superior control and volume, allowing hunters to cut through wind in big-timber or open-meadow scenarios while maintaining a ready shooting position. Safety Note Elk calls can attract other hunters or predators like bears and lions; always maintain 360-degree awareness, positively identify your target, and inspect the latex for choking hazards.