Bonjour Sip Box Standard is made from ultra-durable food grade Stainless Steel and are very safe to use for kids and adults. They are 100% BPA free and Phthalate free.Bonjour Sip Box Standard has a multi walled sealed structure which ensures that liquids are kept hot for more than 6 hours and cold for out 12 hours.Bonjour Sip Box Standard is available with multiple caps so that it can be used by kids and adults easily. Bonjour Sip Box Standard has a sip straw which is soft and made from BPA free materials and is safe for young ones. Bonjour Sip Box Standard comes with a printed sleeve which can double up as a bag with a retractable strap.