This is the high-tech beer growler with an internal pressurized system that preserves a craft beer’s flavor for up to two weeks. Unlike ordinary glass growlers that allow air to quickly render a prized seasonal brew flat and undrinkable, this one uses widely available CO2 cartridges (two included) to prevent spoiling and maintain consistent carbonation. Its regulator cap lets you adjust the carbonation level up to 15 psi to keep beer tasting as fresh as if poured from the local brew pub. The stainless steel growler is double-wall vacuum insulated to keep beer properly chilled, the locking tap allows you to easily pour without opening the cap, and a sight glass lets you monitor the beer supply. With an ergonomic carrying handle. Can also be used to carbonate soda, water, or wine. Cleans easily under the tap.