Got Fizz? Jokari Pump and Pour.Keeps soft drinks from going flat by re-pressurizing plastic bottles to preserve carbonation. Simply replace soda cap with the Fizz-Keeper Pump & Pour and gently squeeze to preserve fizz.Open flip-top lid to pour soda. Fits standard soda bottle sizes of 1, 1.5, and 2-liters. Easy to use. Place cap over the top of a bottle of soda. Squeeze top to "pump" out air. Flip open lid to pour. As simple as that !