Love brewery fresh beer when you feel like it using all the GrowlerWerks uKeg Draft Beer Growler. The innovative apparatus keeps beer carbonated, fresh and cold. As soon as you fill out the uKeg along with your favorite microbrew, it remains cold all day and carbonated for months. Similarly, the durable 18/8 stainless steel guarantees that your beer stays cold. Using VPR technologies, the uKeg includes an adjustable cap and strain gauge, keeping carbonation from 0 to 15 psi. The pressure judge makes it effortless to read the strain inside.