Higdon Outdoors Riven Single Lady Diaphragm Elk Call C93FA905 HG. This call produces incredibly sweet and smooth Cow and Calf sounds. It is a must have for any elk hunter. Features of Higdon Outdoors Riven Single Lady Diaphragm Elk Call: Unbelievable realistic Cow Elk sounds Incredibly sweet and smooth Cow and Calf sounds Must have for any elk hunter Package Contents: Higdon Outdoors Riven Single Lady Diaphragm Elk Call The Single Lady delivers unbelievable realistic Cow Elk sounds. This call produces incredibly sweet and smooth Cow and Calf sounds. It is a must have for any elk hunter. HG65210