Keep your sparkling water fresh with this compact PET bottle, specifically designed for the Aarke Carbonator 3. Its 650ml capacity is perfect for single servings or small households, helping to prolong the life of your CO2 canister by carbonating in smaller, efficient doses. This bottle is an ideal companion for at-home cocktail mixing, ensuring you always have the right amount of bubbles on hand. Lightweight and durable, it is a practical addition to your kitchen setup.