Jokari Ninja Pump Plastic Bottles Jokari's patented design Fizz Ninja is designed to fit any brand of 2-liter plastic soda bottles; not for use on glass bottles Replace the original bottle cap with the Fizz Ninja and squeeze the bulb until the sides of the bottle are rigid to re-pressurize your soda Each package includes 2 Fizz Ninjas with handy flip-top pour lids that will help you to save money by not having throwing out old, flat soft drinks Jokari's clever gadgets, home organization solutions and Healthy Steps portion control essentials and utensil sets are available on Amazon To ensure receipt of genuine Jokari product, look for Jokari products that are sold by Amazon and fulfilled by Amazon