Designed to withstand the continual pressure of carbonation, SodaStream Carbonating Bottles feature a hermetic sealing lid to keep your sparkling drinks fizzy for longer. Each bottle has a lifespan of 3 years and is BPA-free. Not suitable for use in the dishwasher or in hot water. Bottles should not be left in direct sunlight for long periods of time and should only be washed in cold water using either a cleaning tablet or a squeeze of lemon juice.