Carlton's single reed elk- one thin reed is all you need to create realistic young cow moos and calf vocalizations.Wayne carlton's calls diaphragm calls feature long-lasting infinity latex and premium flex frames for the most consistent stretch and sound on the market.Species: ElkMaterial: Infinity LatexSound Species: Calf/CowElectronic: NoColor: BrownStyle: MouthSounds: Vocalization