VEVOR Beer Growler Tap System, 4L Mini Keg, 304 Stainless Steel Pressurized Beer Growler, Keg Growler with Pressure Display, CO2 Regulator Faucet, Leak-Proof Ring For Draft, Homebrew, Craft BeerProduct Features Portable Size A 128oz carbonated beer mini keg, with dimensions of 8. 3 x 8. 3 x 15. 7 inches, comes with a built in portable handle. It is suitable for home gatherings or outdoor camping. Vacuum Sealing The mini dispenser system maintains a vacuum pressure inside the keg, keeping the beer fresh for 1 3 months. Remember to purge the air inside before use. Refrigeration and Insulation The mini keg can be stored in the refrigerator.