Baby Sigg: The Baby Sigg is modern technology's answer to the traditional plastic sippy cup! Made from a single piece of aluminum, this water bottle is extremely durable, spill-proof and leak-proof, incredibly rugged, crack-resistant and completely reusable and recyclable! A ground-breaking interior lining is 100% effective against leaching and combats residue build-up, so the 0.3 L Baby SIGG water bottle is easy to clean and ensures that the only thing your child will taste is the water or juice that you just poured in the bottle. These bottles will last a lifetime!