This stainless steel mini- keg will hold 64oz. Whether you are toting some of your own home brew or dropping in for a refill at your favorite microbrewery, you will turn some heads when you show up with this stainless steel growler that looks just like a mini keg! It keeps the light out and maintains the carbonation pressures for days on end. These stainless steel growlers hold pressures greater than what is required for bottle conditioning and force carbonating. This will allow you to be creative when bottle conditioning. For example, dry hop one, add some spice to another, the possibilities are endless. The solid 304 stainless steel construction will keep your beverage colder longer than it's glass competitors and breakage is never a concern. When pressurizing your growler, do not exceed 25 psi.