Abstract: The present invention is a collapsible cover used to protect an open beverage container from tampering. It is compact and easy to carry and use, is attractive and may be decorated with sports team logos or University symbols or other works of art. It has deep enough extended side walls to prevent someone from unobtrusively removing it to contaminate the beverage and is not too cumbersome to carry in a purse or pocket. The collapsible cover is available in different diameters to allow covering beer or soda cans, bottles, mixed drink glasses or wine glasses. It also has an opening for inserting a straw so that the cover does not have to be removed to consume the beverage.

Abstract: The present invention is in the field of beverage container covers, more particularly, the present invention relates to a collapsible cover to protect an open beverage container from tampering. It is compact and easy to carry and use, is attractive and may be decorated with sports team logos or University symbols or other works of art. A cover that has deep enough fixed side walls to prevent someone from unobtrusively removing it to contaminate the beverage is too cumbersome to carry in a purse or pocket. The collapsible cover is portable and available in different diameters to allow covering beer or soda cans, bottles, mixed drink glasses or wine glasses. It also is available with an opening for inserting a straw so that the cover does not have to be removed to consume the beverage.