Packing both Dual Chamber Technology and a FreezeFree design into an easy-to-blow open reed elk call, the Duel Game Calls Open Reed Calf Elk Call helps you bring big bulls in. As vocal as elk are, make sure you head into elk country with quality calls in your pack. This FreezeFree call features an open reed design you can call all day with without freezing up. This special design also cranks out quality sound when wet and gives you realistic sound on soft or loud calls. Dual Chamber Technology projects your call through 2 separate chambers, mimicing the oral and nasal cavities of a real elk for a fuller, vocally realistic sound. Made in USA.