Your eco-friendly solution. E.Z.Cap swing-top bottles are re-usable. They contain more glass than the average bottle in the market. That means your bottles will last longer and can hold more pressure than any other bottle you will find. We pressure test and guarantee our bottles to 100psi, making them perfect for high-carbonation brews, such as kombucha. Our swing-top cap closure keeps carbonation better than a crown top does, although if you prefer a crown top, they are fitted for that too.