zyppah anti snoring hybrid oral appliance mouthpiece stop snoring sleep aid solution snore stopper mouth guard device - made in usa, fda cleared - military zyppah due to supply chain issues your product may not ship with an instruction guide. instructions are available on the zyppah amazon store: https://www.amazon.com/stores/page/8d7f38c9-2eea-4697-9a98-8e2c627d8aca?ingress=3&visitid=0cc34ba6-81a2-44cd-8d28-0143156ef6ef the zyppah anti-snoring mouthpiece is the only snoring solution of it's kind. zyppah (happy z spelled backwards) is an fda-cleared, self-molded, boil-and-bite oral appliance that is effective, safe and easy to use, and made in the usa. get the most popular hybrid-oral snoring appliance and eliminate your snoring. every zyppah comes with a 90-day warranty and is guaranteed to work or your money back.