SodaStream Carbonating Bottles are specifically designed to handle the pressure of carbonation, so you can enjoy sparkling water on the go. Crafted from high-strength BPA-free plastic, these bottles come with resealable tops and are dishwasher safe. This 2-pack of slim carbonating bottles lets you store your carbonated beverage and take it with you on the go. COLOR: Black SIZE: .5 LITER.