Pack of 3 Jokari Fizz-Keeper soft drink pump caps Fizz-Keeper fits all standard 1 liter, 1-1/2 liter and 2 liter plastic soda bottles Unique patented design preserves carbonation and keeps soda fresh for weeks Intended for use on plastic soda bottles; sturdy all-plastic construction; dishwasher safe Jokari's line of clever gadgets and home storage and organization solutions is available on Amazon