Reusable and durable plastic barrels, with patented inner-bag technology for drinks under pressure. The reusable Gprokeg barrel follows the same principle as the wine container, except that the inner-bag is exchangeable and the beverage is under pressure. You inject a propellant at the external side of the inner bag and the cardboard box had to be replaced by a reinforced container resisting tu to 20 bars. With usual inox kegs, the inert gas that must be injected in the drink affects the taste and shelf life of the beverage. More, a fast keg consumption is then compulsory. Beside the logistic resulting from the drum cleaning, there is an enormous water & chemicals consumption. Such ecologically packaging impact is unacceptable today!