Can you tell me what kind of reusable bottle is safe for toddlers?

New bottles in U.S.: Bottles made and sold in the U.S. are pretty safe, but from time to time, there is updated information about certain materials used in making bottles. New evidence can show potential dangers of certain substances, but it is generally impossible to tell if one particular child will experience any bad effects. Some people feel safer buying new bottles every 2-3 years, and not microwaving bottles.