US Patent 8720739 Beverage can holder and cooler technology

A cooler for holding two cans, particular beverage cans containing beer, soft drinks or the like, in a stacked or tandem arrangement. The cooler holds the cans snuggly, keeping them safe from bumps and the like, and also insulates the cans to preserve cold or hot temperature of can contents as long as practicable. The cooler has a cylindrical configuration including a body with an open top, a closed bottom, and an interior space. The body has a cylindrical sleeve and a bottom, which is either in the form of a separate panel or unitary with the sleeve. The bottom has an aperture for preventing or reducing vacuum on the inside of the cooler.