The 2 Litre Ultimate Growler is just that! The Ultimate Growler! Made from 304 Stainless Steel and Double Wall Vacuum Insulated this is the ultimate storage and serving device to package and transit your own or a great mates or your local fresh craft breweries beer. Whether enjoying at home or out and about at parties the Ultimate Growler is made from 304 Stainless Steel that is completely impervious to oxygen and sunlight (UV) meaning your precious amber liquid is in the absolute best storage container possible. Unlike many other growlers this growler comes with double wall vacuum insulation to give you insulation like no other growler. Forget about taking the "esky" or "chilly bin" out with you as the Ultimate Growler will stay cold for hours. Most screw top growlers struggle to hold the pressure required to keep your beer fresh and carbonated. The Ultimate Growler comes with a spring wired lid capable of holding up to 40 psi.