Phelps Kyven Collapsible Bugle Tube - The Kyven Gear Modular Bugle Tube For years, hunters have been asking for a compact bugle tube that doesn’t compromise on sound quality. In early 2023, brothers Kyle and Steven Bradshaw partnered with us to create exactly that—an industry-changing design that redefines elk calling. Named after the duo, the Kyven Gear Modular Bugle Tube collapses down to the size of a Nalgene® bottle for ultimate packability—yet delivers incredible sound range, from piercing high-pitched screams to deep, resonant grunts and chuckles. When not in use, each segment nests securely for silent, snag-free transport into your favorite elk country. The Kyven Tube is the ultimate balance of portability, durability, and unmatched elk-calling performance—built for hunters who demand the best in the field. Expanding Your Tube: Hold the larger end in your left hand, gripping the two largest segments. Unscrew the mouthpiece counterclockwise from its nested position. Turn the tube upside down, extend the narrow neck fully, and continue turning counterclockwise until snug (avoid cross-threading). Unscrew the middle segment counterclockwise, pull it out, and attach the largest segment counterclockwise until snug. Do not overtighten. Collapsing Your Tube: Simply reverse the above steps, turning clockwise to nest each section securely. **Do Not Overtighten**