SealRite cushioned frame technology. Conforms to palate. Superior airtight seal. Increased reed vibration zone. Extra raspy tone. The Elevation Series Boomerang is meticulously crafted of three latex reeds (1).004 (2).003. Less is more applies to this setback reed design. Slightly less, yet ultra stable surface area to control, the single spike cut longest reed adds realistic heavy rasp. The Boomerang performs the heavy rasp vocalizations of the wild turkey, with added stability for loud aggressive calling.