Keystone beer is a product of the Molson Coors Beverage Company in Golden, Colorado.
Keystone is a primary sponsor for Austin Cindric’s number 2 car in the NASCAR Cup Series.
Six varieties of Keystone have been produced, as well as the original: The "Light" and "Ice" versions of the beer are far more prevalent and readily available for retail across the United States.
Though Keystone Premium exists, it appears much less than its "Light" variety on liquor store shelves.
Recently, a new variety of Keystone, V9, has been introduced to Puerto Rico by a licensed distributor there, V. Suárez & Co. Inc., of Guaynabo, intended to be sold cheaply.