Portable Party Soda Fizz Saver Dispenser Bottle Drinking Water Dispense Gadget Machine Durable plastic construction. Washable & reusable. Bottom diameter:10cm, Height: 15cm Easy for operating. Designed to keep soda and other carbonated beverages from going flat. Simply twist dispenser onto the top of a plastic 2-liter bottle, then invert the bottle to dispense drinks into your glass. First products reversal, the base at the mouth bottles securely tighten, then flip the bottles, they can be placed on the desktop use. Offer you much convenience. Fizz will last until the bottle is empty. Great for use at home, office, camping, entertaining and more.